cheatsheets/brew-index.md

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---
title: Homebrew index
---
# Homebrew
#### A
- [a2ps](http://www.gnu.org/software/a2ps/)
- [a52dec](http://liba52.sourceforge.net/)
- [aacgain](http://aacgain.altosdesign.com/)
- [aalib](http://aa-project.sourceforge.net/aalib/)
- [aamath](http://fuse.superglue.se/aamath/)
- [aardvark_shell_utils](http://www.laffeycomputer.com/shellutils.html)
- [abcde](https://code.google.com/p/abcde/)
- [abcl](http://abcl.org)
- [abcm2ps](http://moinejf.free.fr)
- [abcmidi](http://www.ifdo.ca/~seymour/runabc/top.html)
- [abiword](http://www.abisource.com/)
- [abnfgen](http://www.quut.com/abnfgen/)
- [abook](http://abook.sourceforge.net/)
- [ace](http://www.cse.wustl.edu/~schmidt/ACE.html)
- [aces_container](https://github.com/ampas/aces_container)
- [ack](http://beyondgrep.com/)
- [acme](http://www.esw-heim.tu-clausthal.de/~marco/smorbrod/acme/)
- [acpica](https://www.acpica.org/)
- [activemq-cpp](http://activemq.apache.org/cms/index.html)
- [activemq](http://activemq.apache.org/)
- [admesh](https://github.com/admesh/admesh)
- [adns](http://www.chiark.greenend.org.uk/~ian/adns/)
- [adobe-air-sdk](http://adobe.com/products/air/sdk)
- [adplug](http://adplug.sf.net)
- [advancecomp](http://advancemame.sourceforge.net/comp-readme.html)
- [aescrypt](http://aescrypt.sourceforge.net/)
- [aespipe](http://loop-aes.sourceforge.net/)
- [afflib](https://github.com/simsong/AFFLIBv3)
- [afio](http://members.chello.nl/~k.holtman/afio.html)
- [afsctool](http://brkirch.wordpress.com/afsctool/)
- [aften](http://aften.sourceforge.net/)
- [afuse](https://github.com/pcarrier/afuse/)
- [aget](http://www.enderunix.org/aget/)
- [aggregate](http://freecode.com/projects/aggregate/)
- [agrep](http://en.wikipedia.org/wiki/Agrep)
- [aha](https://github.com/theZiz/aha)
- [ahcpd](http://www.pps.univ-paris-diderot.fr/~jch/software/ahcp/)
- [aiccu](https://www.sixxs.net/tools/aiccu/)
- [aimage](http://www.forensicswiki.org/wiki/Aimage)
- [aircrack-ng](http://aircrack-ng.org/)
- [akka](http://akka.io/)
- [alac](http://craz.net/programs/itunes/alac.html)
- [aldo](http://www.nongnu.org/aldo/)
- [algol68g](http://www.xs4all.nl/~jmvdveer/algol.html)
- [align](http://www.cs.indiana.edu/~kinzler/align/)
- [alpine-chappa](http://patches.freeiz.com/alpine/)
- [alpine](http://www.washington.edu/alpine/)
- [alure](http://kcat.strangesoft.net/alure.html)
- [amap](http://www.thc.org/thc-amap/)
- [amtterm](http://www.kraxel.org/blog/linux/amtterm/)
- [analog](http://analog.cx)
- [android-ndk](http://developer.android.com/sdk/ndk/index.html)
- [android-platform-tools](http://developer.android.com/sdk)
- [android-sdk](http://developer.android.com/index.html)
- [ansible](http://www.ansible.com/home)
- [ansifilter](http://www.andre-simon.de/doku/ansifilter/ansifilter.html)
- [ant-contrib](http://ant-contrib.sourceforge.net/)
- [ant](http://ant.apache.org/)
- [antiword](http://www.winfield.demon.nl/)
- [antlr](http://www.antlr.org/)
- [anttweakbar](http://www.antisphere.com/Wiki/tools:anttweakbar)
- [aoeui](http://aoeui.googlecode.com/)
- [apache-forrest](http://forrest.apache.org/)
- [apache-opennlp](http://opennlp.apache.org/)
- [apache-spark](http://spark.apache.org/)
- [apachetop](http://freecode.com/projects/apachetop)
- [ape](http://www.ape-project.org/)
- [apg](http://www.adel.nursat.kz/apg/)
- [apgdiff](http://www.apgdiff.com/)
- [apib](https://github.com/apigee/apib)
- [apktool](http://android-apktool.googlecode.com/)
- [aplus](http://www.aplusdev.org/)
- [apngasm](https://github.com/apngasm/apngasm)
- [apollo](http://activemq.apache.org/apollo)
- [app-engine-java-sdk](https://developers.google.com/appengine/docs/java/gettingstarted/introduction)
- [apparix](http://micans.org/apparix/)
- [appledoc](http://appledoc.gentlebytes.com/)
- [appscale-tools](https://github.com/AppScale/appscale-tools)
- [apt-cacher-ng](http://www.unix-ag.uni-kl.de/~bloch/acng/)
- [apt-dater](http://www.ibh.de/apt-dater/)
- [aqbanking](http://www.aqbanking.de/)
- [arabica](http://www.jezuk.co.uk/cgi-bin/view/arabica)
- [arangodb](http://www.arangodb.org/)
- [archey](http://obihann.github.io/archey-osx/)
- [archivemount](http://www.cybernoia.de/software/archivemount.html)
- [argp-standalone](http://www.lysator.liu.se/~nisse/misc/)
- [argtable](http://argtable.sourceforge.net)
- [argus-clients](http://qosient.com/argus/)
- [argus](http://qosient.com/argus/)
- [argyll-cms](http://www.argyllcms.com/)
- [aria2](http://aria2.sourceforge.net/)
- [arm](http://www.atagar.com/arm/)
- [arp-scan](http://www.nta-monitor.com/tools-resources/security-tools/arp-scan)
- [arp-sk](http://sid.rstack.org/arp-sk/)
- [arping](https://github.com/ThomasHabets/arping)
- [arpoison](http://www.arpoison.net/)
- [arss](http://arss.sourceforge.net/)
- [ascii](http://www.catb.org/~esr/ascii/)
- [asciidoc](http://www.methods.co.nz/asciidoc)
- [asciitex](http://asciitex.sourceforge.net)
- [asm6](http://home.comcast.net/~olimar/NES/)
- [asn1c](http://lionet.info/asn1c/blog/)
- [aspcud](http://potassco.sourceforge.net/)
- [aspell](http://aspell.net/)
- [assimp](http://assimp.sourceforge.net/)
- [astyle](http://astyle.sourceforge.net/)
- [at-spi2-atk](http://a11y.org)
- [at-spi2-core](http://a11y.org)
- [atari++](http://www.xl-project.com)
- [atdtool](https://github.com/lpenz/atdtool)
- [aterm](http://strategoxt.org/Tools/ATermFormat)
- [atf](https://github.com/jmmv/atf)
- [atk](http://library.gnome.org/devel/atk/)
- [atkmm](http://www.gtkmm.org)
- [atomicparsley](http://bitbucket.org/wez/atomicparsley/overview/)
- [atool](http://www.nongnu.org/atool/)
- [ats2-postiats](http://www.ats-lang.org/)
- [attica](http://www.kde.org/)
- [aubio](http://aubio.org/)
- [auctex](http://www.gnu.org/software/auctex/)
- [audiofile](http://www.68k.org/~michael/audiofile/)
- [augeas](http://augeas.net)
- [authexec](https://github.com/tcurdt/authexec)
- [auto-scaling](http://aws.amazon.com/developertools/2535)
- [autobench](http://www.xenoclast.org/autobench/)
- [autoconf-archive](http://savannah.gnu.org/projects/autoconf-archive/)
- [autoconf](http://www.gnu.org/software/autoconf)
- [autoenv](https://github.com/kennethreitz/autoenv)
- [autogen](http://autogen.sourceforge.net)
- [autojump](https://github.com/joelthelion/autojump#name)
- [automake](http://www.gnu.org/software/automake/)
- [automoc4](http://techbase.kde.org/Development/Tools/Automoc4)
- [automysqlbackup](http://sourceforge.net/projects/automysqlbackup/)
- [autopano-sift-c](http://wiki.panotools.org/Autopano-sift-C)
- [autopsy](http://www.sleuthkit.org/autopsy/index.php)
- [autossh](http://www.harding.motd.ca/autossh/)
- [autotrace](http://autotrace.sourceforge.net)
- [avce00](http://avce00.maptools.org/avce00/index.html)
- [avfs](http://avf.sourceforge.net/)
- [avian](http://oss.readytalk.com/avian/)
- [avidemux](http://fixounet.free.fr/avidemux/)
- [aview](http://aa-project.sourceforge.net/aview/)
- [avra](http://avra.sourceforge.net/)
- [avrdude](http://savannah.nongnu.org/projects/avrdude/)
- [avro-c](http://avro.apache.org/)
- [avro-cpp](http://avro.apache.org/)
- [avro-tools](http://avro.apache.org/)
- [aws-cfn-tools](http://aws.amazon.com/developertools/AWS-CloudFormation/2555753788650372)
- [aws-cloudsearch](http://aws.amazon.com/developertools/9054800585729911)
- [aws-elasticache](http://aws.amazon.com/developertools/2310261897259567)
- [aws-elasticbeanstalk](http://aws.amazon.com/code/6752709412171743)
- [aws-iam-tools](http://aws.amazon.com/developertools/4143)
- [aws-sns-cli](http://aws.amazon.com/developertools/3688)
- [awscli](https://aws.amazon.com/cli/)
- [axel](http://packages.debian.org/wheezy/axel)
#### B
- [b43-fwcutter](http://wireless.kernel.org/en/users/Drivers/b43)
- [babeld](http://www.pps.univ-paris-diderot.fr/~jch/software/babel/)
- [babl](http://www.gegl.org/babl/)
- [backupninja](https://labs.riseup.net/code/projects/backupninja)
- [bacula-fd](http://www.bacula.org/)
- [bagit](https://github.com/LibraryOfCongress/bagit-java)
- [balance](http://www.inlab.de/balance.html)
- [bam](http://matricks.github.io/bam/)
- [bar](http://www.theiling.de/projects/bar.html)
- [base64](http://www.fourmilab.ch/webtools/base64/)
- [basex](http://basex.org)
- [bash-completion](http://bash-completion.alioth.debian.org/)
- [bash-git-prompt](https://github.com/magicmonty/bash-git-prompt)
- [bash](http://www.gnu.org/software/bash/)
- [bashdb](http://bashdb.sourceforge.net)
- [bashish](http://bashish.sourceforge.net/)
- [batik](https://xmlgraphics.apache.org/batik/)
- [bats](https://github.com/sstephenson/bats)
- [bazaar](http://bazaar-vcs.org/)
- [bbcolors](http://daringfireball.net/projects/bbcolors/)
- [bbcp](http://www.slac.stanford.edu/%7Eabh/bbcp)
- [bbe](http://bbe-.sourceforge.net)
- [bbftp-client](http://doc.in2p3.fr/bbftp/)
- [bchunk](http://he.fi/bchunk/)
- [bcpp](http://invisible-island.net/bcpp/)
- [bcrypt](http://bcrypt.sourceforge.net)
- [bcwipe](http://www.jetico.com/linux/bcwipe-help/)
- [bdw-gc](http://www.hboehm.info/gc/)
- [beansdb](https://github.com/douban/beansdb)
- [beanstalk](http://kr.github.io/beanstalkd/)
- [bear](https://github.com/rizsotto/Bear)
- [beecrypt](http://beecrypt.sourceforge.net)
- [berkeley-db](http://www.oracle.com/technology/products/berkeley-db/index.html)
- [berkeley-db4](http://www.oracle.com/technology/products/berkeley-db/index.html)
- [betty](https://github.com/pickhardt/betty)
- [bfg](http://rtyley.github.io/bfg-repo-cleaner/)
- [bgpq3](http://snar.spb.ru/prog/bgpq3/)
- [bgrep](https://github.com/tmbinc/bgrep)
- [bib-tool](http://www.gerd-neugebauer.de/software/TeX/BibTool/index.en.html)
- [bibclean](http://www.math.utah.edu/~beebe/software/bibclean/bibclean-03.html#HDR.3)
- [bibtex2html](http://www.lri.fr/~filliatr/bibtex2html/)
- [bibtexconv](http://www.iem.uni-due.de/~dreibh/bibtexconv/)
- [bibutils](http://sourceforge.net/p/bibutils/home/Bibutils/)
- [bigdata](http://bigdata.com/)
- [bigloo](http://www-sop.inria.fr/indes/fp/Bigloo/)
- [bind](http://www.isc.org/software/bind/)
- [bindfs](http://bindfs.org/)
- [binutils](http://www.gnu.org/software/binutils/binutils.html)
- [binwalk](http://binwalk.org/)
- [bip](http://bip.milkypond.org)
- [bison](http://www.gnu.org/software/bison/)
- [bitchx](https://github.com/BitchX)
- [bitlbee](http://www.bitlbee.org/)
- [bittwist](http://bittwist.sourceforge.net)
- [blackbox](http://www.cs.rochester.edu/u/kautz/satplan/blackbox/)
- [blahtexml](http://gva.noekeon.org/blahtexml/)
- [blazeblogger](http://blaze.blackened.cz/)
- [blink1](http://thingm.com/products/blink-1.html)
- [blitz](http://blitz.sourceforge.net)
- [blitzwave](http://oschulz.github.io/blitzwave)
- [blueutil](https://github.com/toy/blueutil)
- [bmake](http://www.crufty.net/help/sjg/bmake.html)
- [bmon](https://github.com/tgraf/bmon)
- [bochs](http://bochs.sourceforge.net/)
- [bogofilter](http://bogofilter.sourceforge.net)
- [bokken](https://inguma.eu/projects/bokken)
- [bonnie++](http://www.coker.com.au/bonnie++/)
- [boost-bcp](http://www.boost.org/doc/tools/bcp/)
- [boost-build](http://boost.org/boost-build2/)
- [boost-python](http://www.boost.org)
- [boost](http://www.boost.org)
- [boot2docker](https://github.com/boot2docker/boot2docker-cli)
- [botan](http://botan.randombit.net/)
- [box2d](http://www.box2d.org/)
- [boxes](http://boxes.thomasjensen.com/)
- [bpm-tools](http://www.pogo.org.uk/~mark/bpm-tools/)
- [brag](http://brag.sourceforge.net/)
- [brew-cask](https://github.com/caskroom/homebrew-cask/)
- [brew-gem](https://github.com/josh/brew-gem)
- [brew-pip](https://github.com/hanxue/brew-pip)
- [briss](http://briss.sourceforge.net/)
- [bro](http://www.bro-ids.org/)
- [browser](https://gist.github.com/318247/)
- [bsdconv](https://github.com/buganini/bsdconv)
- [bsdiff](http://www.daemonology.net/bsdiff)
- [bsdmake](http://opensource.apple.com/)
- [bsdsfv](http://bsdsfv.sourceforge.net/)
- [bsponmpi](http://sourceforge.net/projects/bsponmpi)
- [btparse](http://www.gerg.ca/software/btOOL/)
- [btpd](https://github.com/btpd/btpd)
- [buildapp](http://www.xach.com/lisp/buildapp/)
- [bulk_extractor](https://github.com/simsong/bulk_extractor/wiki)
- [bullet](http://bulletphysics.org/wordpress/)
- [bup](https://github.com/bup/bup)
- [burl](https://github.com/visionmedia/burl)
- [burp](http://burp.grke.org/)
- [bvi](http://bvi.sourceforge.net)
- [bwm-ng](http://www.gropp.org/?id=projects&sub=bwm-ng)
- [byacc](http://invisible-island.net/byacc/byacc.html)
- [byobu](http://byobu.co)
#### C
- [c-ares](http://c-ares.haxx.se/)
- [c-kermit](http://www.kermitproject.org/)
- [cabal-install](http://www.haskell.org/haskellwiki/Cabal-Install)
- [cabextract](http://www.cabextract.org.uk/)
- [cabocha](http://code.google.com/p/cabocha/)
- [cadaver](http://www.webdav.org/cadaver/)
- [cadubi](http://langworth.com/pub/cadubi/)
- [cairo](http://cairographics.org/)
- [cairomm](http://cairographics.org/cairomm/)
- [calabash](http://xmlcalabash.com)
- [calc](http://www.isthe.com/chongo/tech/comp/calc/)
- [calcurse](http://calcurse.org/)
- [camellia](http://camellia.sourceforge.net/)
- [camlistore](http://camlistore.org)
- [camlp5](http://camlp5.gforge.inria.fr/)
- [capnp](http://kentonv.github.io/capnproto/)
- [capstone](http://capstone-engine.org)
- [cardpeek](http://pannetrat.com/Cardpeek/)
- [cask](http://cask.readthedocs.org/)
- [casperjs](http://www.casperjs.org/)
- [cassandra](http://cassandra.apache.org)
- [catdoc](http://wagner.pp.ru/~vitus/software/catdoc/)
- [cattle](https://github.com/andreabolognani/cattle#readme)
- [caudec](http://caudec.outpost.fr/)
- [cayley](https://github.com/google/cayley)
- [cbmbasic](http://cbmbasic.sourceforge.net/)
- [cc65](https://cc65.github.io/cc65/)
- [ccache](http://ccache.samba.org/)
- [ccal](http://ccal.chinesebay.com/ccal)
- [ccd2iso](http://ccd2iso.sourceforge.net/)
- [ccextractor](http://ccextractor.sourceforge.net/)
- [cclive](http://cclive.sourceforge.net/)
- [ccm](https://github.com/pcmanus/ccm)
- [cconv](http://code.google.com/p/cconv/)
- [ccrypt](http://ccrypt.sourceforge.net/)
- [cctools-headers](https://opensource.apple.com/)
- [ccze](http://packages.debian.org/wheezy/ccze)
- [cd-discid](http://linukz.org/cd-discid.shtml)
- [cdargs](http://www.skamphausen.de/cgi-bin/ska/CDargs)
- [cdb](http://cr.yp.to/cdb.html)
- [cdecl](http://cdecl.org/)
- [cdf](http://bmp-plugins.berlios.de/misc/cdf/cdf.html)
- [cdimgtools](http://home.gna.org/cdimgtools/)
- [cdk](http://invisible-island.net/cdk/)
- [cdlabelgen](http://www.aczoom.com/tools/cdinsert/)
- [cdparanoia](http://www.xiph.org/paranoia/)
- [cdpr](http://www.monkeymental.com/)
- [cdrdao](http://cdrdao.sourceforge.net/)
- [cdrtools](http://cdrecord.org/)
- [celt](http://www.celt-codec.org/)
- [center-im](http://www.centerim.org/index.php/Main_Page)
- [cereal](http://uscilab.github.io/cereal/)
- [ceylon](http://ceylon-lang.org/)
- [cfengine](http://cfengine.com/)
- [cfitsio](http://heasarc.gsfc.nasa.gov/docs/software/fitsio/fitsio.html)
- [cflow](http://www.gnu.org/software/cflow/)
- [cfv](http://cfv.sourceforge.net/)
- [cgal](http://www.cgal.org/)
- [cgdb](http://cgdb.github.io/)
- [cgrep](https://github.com/awgn/cgrep)
- [cgvg](http://www.uzix.org/cgvg.html)
- [charm-tools](https://launchpad.net/charm-tools)
- [chcase](http://www.primaledge.ca/chcase.html)
- [cheat](https://github.com/chrisallenlane/cheat)
- [check](http://check.sourceforge.net/)
- [check_postgres](http://bucardo.org/wiki/Check_postgres)
- [checkbashisms](http://manpages.ubuntu.com/manpages/natty/man1/checkbashisms.1.html)
- [checkstyle](http://checkstyle.sourceforge.net/)
- [cherokee](http://cherokee-project.com/)
- [chgems](https://github.com/postmodern/chgems#readme)
- [chibi-scheme](http://code.google.com/p/chibi-scheme/)
- [chicken](http://www.call-cc.org/)
- [chipmunk](http://chipmunk-physics.net/)
- [chisel](https://github.com/facebook/chisel)
- [chkrootkit](http://www.chkrootkit.org/)
- [chktex](http://www.nongnu.org/chktex/)
- [chmlib](http://www.jedrea.com/chmlib)
- [chordii](http://www.vromans.org/johan/projects/Chordii/)
- [chromaprint](http://acoustid.org/chromaprint)
- [chrome-cli](https://github.com/prasmussen/chrome-cli)
- [chromedriver](http://code.google.com/p/chromedriver/)
- [chruby-fish](https://github.com/JeanMertz/chruby-fish#readme)
- [chruby](https://github.com/postmodern/chruby#readme)
- [chuck](http://chuck.cs.princeton.edu/)
- [cifer](http://code.google.com/p/cifer/)
- [cimg](http://cimg.sourceforge.net/)
- [cityhash](https://code.google.com/p/cityhash/)
- [cksfv](http://zakalwe.fi/~shd/foss/cksfv/)
- [clam](http://clam-project.org)
- [clamav](http://www.clamav.net/)
- [clamz](http://code.google.com/p/clamz/)
- [clasp](http://potassco.sourceforge.net/)
- [class-dump](http://stevenygard.com/projects/class-dump/)
- [classads](http://www.cs.wisc.edu/condor/classad/)
- [clay](http://claylabs.com/clay/)
- [clean](http://clean.sourceforge.net/)
- [clens](https://opensource.conformal.com/wiki/clens)
- [clhep](http://proj-clhep.web.cern.ch/proj-clhep/)
- [clib](https://github.com/clibs/clib)
- [cliclick](http://www.bluem.net/jump/cliclick/)
- [clipper](https://wincent.com/products/clipper)
- [clipsafe](http://waxandwane.org/clipsafe.html)
- [clisp](http://www.clisp.org/)
- [cln](http://www.ginac.de/CLN/)
- [cloc](http://cloc.sourceforge.net/)
- [clockywock](http://soomka.com/)
- [clojurescript](https://github.com/clojure/clojurescript)
- [cloog](http://www.cloog.org/)
- [closure-compiler](https://github.com/google/closure-compiler)
- [cloud-watch](http://aws.amazon.com/developertools/2534)
- [cloudbees-sdk](http://wiki.cloudbees.com/bin/view/RUN/BeesSDK)
- [clozure-cl](http://ccl.clozure.com/)
- [clpbar](http://clpbar.sourceforge.net/)
- [clucene](http://clucene.sourceforge.net)
- [clusterit](http://www.garbled.net/clusterit.html)
- [clutter-gst](https://wiki.gnome.org/Clutter)
- [clutter-gtk](https://wiki.gnome.org/Projects/Clutter)
- [clutter](https://wiki.gnome.org/Projects/Clutter)
- [cmake](http://www.cmake.org/)
- [cmatrix](http://www.asty.org/cmatrix/)
- [cmigemo](http://www.kaoriya.net/software/cmigemo)
- [cmocka](http://cmocka.cryptomilk.org/)
- [cmockery](http://code.google.com/p/cmockery/)
- [cmockery2](https://github.com/lpabon/cmockery2)
- [cmu-pocketsphinx](http://cmusphinx.sourceforge.net/)
- [cmu-sphinxbase](http://cmusphinx.sourceforge.net/)
- [cmuclmtk](http://cmusphinx.sourceforge.net/)
- [cmus](https://cmus.github.io/)
- [cntlm](http://cntlm.sourceforge.net/)
- [coccinelle](http://coccinelle.lip6.fr/)
- [cocot](http://vmi.jp/software/cygwin/cocot.html)
- [coda-cli](http://justinhileman.info/coda-cli/)
- [codequery](https://github.com/ruben2020/codequery)
- [cogl](http://developer.gnome.org/cogl/)
- [coin](https://bitbucket.org/Coin3D/coin/wiki/Home)
- [collada-dom](http://www.collada.org/mediawiki/index.php/Portal:COLLADA_DOM)
- [collectd](http://collectd.org/)
- [colordiff](http://www.colordiff.org/)
- [colormake](https://github.com/pagekite/Colormake)
- [colorsvn](http://colorsvn.tigris.org/)
- [colortail](http://joakimandersson.se/projects/colortail/)
- [comparepdf](http://www.qtrac.eu/comparepdf.html)
- [compcert](http://compcert.inria.fr)
- [compface](http://freecode.com/projects/compface)
- [concurrencykit](http://concurrencykit.org)
- [confuse](http://www.nongnu.org/confuse/)
- [connect](http://bent.latency.net/bent/git/goto-san-connect-1.85/src/connect.html)
- [conserver](http://conserver.com)
- [contacts](http://www.gnufoo.org/contacts/contacts.html)
- [convertlit](http://www.convertlit.com/)
- [convmv](http://www.j3e.de/linux/convmv/)
- [cookiecutter](https://github.com/audreyr/cookiecutter)
- [coq](http://coq.inria.fr/)
- [coremod](http://xmp.sourceforge.net)
- [coreutils](https://www.gnu.org/software/coreutils)
- [corkscrew](http://www.agroman.net/corkscrew/)
- [couchdb-lucene](https://github.com/rnewson/couchdb-lucene)
- [couchdb](http://couchdb.apache.org/)
- [couchpotatoserver](https://couchpota.to)
- [cowpatty](http://www.willhackforsushi.com/?page_id=50)
- [cowsay](http://www.nog.net/~tony/warez/cowsay.shtml)
- [cpanminus](https://github.com/miyagawa/cpanminus)
- [cpansearch](https://github.com/c9s/cpansearch)
- [cpmtools](http://www.moria.de/~michael/cpmtools/)
- [cppcheck](http://sourceforge.net/apps/mediawiki/cppcheck/index.php?title=Main_Page)
- [cppdom](http://sourceforge.net/projects/xml-cppdom/)
- [cppi](http://www.gnu.org/software/cppi/)
- [cpptest](http://cpptest.sourceforge.net/)
- [cppunit](http://sourceforge.net/apps/mediawiki/cppunit/)
- [cpputest](http://www.cpputest.org/)
- [cpulimit](https://github.com/opsengine/cpulimit)
- [cputhrottle](http://www.willnolan.com/cputhrottle/cputhrottle.html)
- [cracklib-words](http://cracklib.sourceforge.net)
- [cracklib](http://cracklib.sourceforge.net/)
- [crash](http://www.crashub.org/)
- [crf++](http://code.google.com/p/crfpp/)
- [crm114](http://crm114.sourceforge.net/)
- [cronolog](http://cronolog.org/)
- [crosstool-ng](http://crosstool-ng.org)
- [crunch](http://sourceforge.net/projects/crunch-wordlist)
- [crush-tools](http://crush-tools.googlecode.com/)
- [cryptopp](http://www.cryptopp.com/)
- [cscope](http://cscope.sourceforge.net/)
- [csfml](http://www.sfml-dev.org/)
- [csmith](http://embed.cs.utah.edu/csmith/)
- [cspice](http://naif.jpl.nasa.gov/naif/index.html)
- [css-crush](http://the-echoplex.net/csscrush)
- [cssembed](http://www.nczonline.net/blog/2009/11/03/automatic-data-uri-embedding-in-css-files/)
- [csshx](http://code.google.com/p/csshx/)
- [csup](https://bitbucket.org/mux/csup)
- [csv-fix](http://neilb.bitbucket.org/csvfix/)
- [csvprintf](http://code.google.com/p/csvprintf/)
- [csync](http://www.csync.org/)
- [ctags](http://ctags.sourceforge.net/)
- [ctail](http://ctail.i-want-a-pony.com/)
- [ctemplate](https://ctemplate.googlecode.com/)
- [ctl](https://github.com/ampas/CTL)
- [ctorrent](http://www.rahul.net/dholmes/ctorrent/)
- [cuetools](https://github.com/svend/cuetools)
- [cunit](http://cunit.sourceforge.net/)
- [cups-pdf](http://www.cups-pdf.de/)
- [curaengine](https://github.com/Ultimaker/CuraEngine)
- [curl](http://curl.haxx.se/)
- [curlftpfs](http://curlftpfs.sourceforge.net/)
- [cutter](http://cutter.sourceforge.net/)
- [cuty_capt](http://cutycapt.sourceforge.net/)
- [cvs](http://cvs.nongnu.org/)
- [cvs2svn](http://cvs2svn.tigris.org/)
- [cvsps](http://www.catb.org/~esr/cvsps/)
- [cvsutils](http://www.red-bean.com/cvsutils/)
- [cvsync](http://www.cvsync.org/)
- [cweb](http://www-cs-faculty.stanford.edu/~uno/cweb.html)
- [cwm](https://github.com/chneukirchen/cwm)
- [cyassl](http://yassl.com/yaSSL/Products-cyassl.html)
- [czmq](http://czmq.zeromq.org/)
#### D
- [d-bus](http://www.freedesktop.org/wiki/Software/dbus)
- [daemon](http://libslack.org/daemon/)
- [daemonize](http://software.clapper.org/daemonize/)
- [daemonlogger](http://www.snort.org/snort-downloads/additional-downloads#daemonlogger)
- [daemontools](http://cr.yp.to/daemontools.html)
- [dante](http://www.inet.no/dante/)
- [daq](http://www.snort.org/)
- [dar](http://dar.linux.free.fr/doc/index.html)
- [darcs](http://darcs.net/)
- [darkhttpd](http://unix4lyfe.org/darkhttpd/)
- [darkice](http://code.google.com/p/darkice/)
- [darkstat](http://unix4lyfe.org/darkstat/)
- [dart](https://www.dartlang.org/)
- [dash](http://gondor.apana.org.au/~herbert/dash/)
- [dasm](http://dasm-dillon.sourceforge.net)
- [datamash](http://www.gnu.org/software/datamash)
- [dateutils](http://www.fresse.org/dateutils/)
- [datomic](http://www.datomic.com/)
- [davix](http://dmc.web.cern.ch/projects/davix/home)
- [dbacl](http://dbacl.sourceforge.net/)
- [dbslayer](http://code.nytimes.com/projects/dbslayer/wiki)
- [dbus-glib](http://www.freedesktop.org/Software/dbus)
- [dc3dd](http://sourceforge.net/projects/dc3dd/)
- [dcal](http://alexeyt.freeshell.org/)
- [dcfldd](http://dcfldd.sourceforge.net/)
- [dcled](http://www.jeffrika.com/~malakai/dcled/index.html)
- [dcmtk](http://dicom.offis.de/dcmtk.php.en)
- [dcraw](http://www.cybercom.net/~dcoffin/dcraw/)
- [ddar](http://www.synctus.com/ddar/)
- [ddate](https://github.com/bo0ts/ddate)
- [ddclient](http://sourceforge.net/p/ddclient/wiki/Home)
- [ddd](http://www.gnu.org/s/ddd/)
- [ddrescue](https://www.gnu.org/software/ddrescue/ddrescue.html)
- [debianutils](http://anonscm.debian.org/gitweb/?p=users/clint/debianutils.git)
- [deheader](http://www.catb.org/~esr/deheader)
- [deja-gnu](http://www.gnu.org/software/dejagnu/)
- [denominator](https://github.com/Netflix/denominator/tree/master/cli)
- [denyhosts](http://denyhosts.sourceforge.net/)
- [depqbf](http://lonsing.github.io/depqbf/)
- [detox](http://detox.sourceforge.net/)
- [devil](http://sourceforge.net/projects/openil/)
- [devtodo](http://swapoff.org/DevTodo)
- [dex2jar](https://code.google.com/p/dex2jar/)
- [dfc](http://projects.gw-computing.net/projects/dfc)
- [dfu-programmer](http://dfu-programmer.sourceforge.net/)
- [dfu-util](http://dfu-util.gnumonks.org/)
- [dgtal](http://libdgtal.org)
- [dhcpdump](http://www.mavetju.org)
- [dhcping](http://www.mavetju.org)
- [dhex](http://www.dettus.net/dhex/)
- [di](http://www.gentoo.com/di/)
- [dialog](http://invisible-island.net/dialog/)
- [dict](http://www.dict.org/)
- [diction](http://www.gnu.org/software/diction/)
- [dieharder](http://www.phy.duke.edu/~rgb/General/dieharder.php)
- [diff-pdf](http://vslavik.github.io/diff-pdf/)
- [diffuse](http://diffuse.sourceforge.net/)
- [dirac](http://diracvideo.org/)
- [dircproxy](http://code.google.com/p/dircproxy/)
- [direnv](http://www.direnv.net)
- [dirmngr](http://www.gnupg.org)
- [dirt](https://github.com/yaxu/Dirt)
- [disco](http://discoproject.org/)
- [discodex](https://github.com/discoproject/discodex)
- [discount](http://www.pell.portland.or.us/~orc/Code/discount/)
- [disktype](http://disktype.sourceforge.net/)
- [distcc](http://code.google.com/p/distcc/)
- [ditaa](http://ditaa.sourceforge.net/)
- [djbdns](http://cr.yp.to/djbdns.html)
- [djmount](http://djmount.sourceforge.net/)
- [djview4](http://djvu.sourceforge.net/djview4.html)
- [djvu2pdf](http://0x2a.at/s/projects/djvu2pdf)
- [djvulibre](http://djvu.sourceforge.net/)
- [dmalloc](http://dmalloc.com)
- [dmd](http://dlang.org)
- [dmenu](http://tools.suckless.org/dmenu/)
- [dmtx-utils](http://www.libdmtx.org)
- [dns2tcp](http://www.hsc.fr/ressources/outils/dns2tcp/index.html.en)
- [dnscrypt-proxy](http://dnscrypt.org)
- [dnsmap](http://code.google.com/p/dnsmap/)
- [dnsmasq](http://www.thekelleys.org.uk/dnsmasq/doc.html)
- [dnsperf](http://nominum.com/support/measurement-tools/)
- [dnsrend](http://romana.now.ie/dnsrend)
- [dnstop](http://dns.measurement-factory.com/tools/dnstop/index.html)
- [dnstracer](http://www.mavetju.org/unix/dnstracer.php)
- [docbook-xsl](http://docbook.sourceforge.net/)
- [docbook](http://docbook.sourceforge.net/)
- [docbook2x](http://docbook2x.sourceforge.net/)
- [docker](http://docker.io)
- [dockutil](https://github.com/kcrawford/dockutil)
- [doitlive](http://doitlive.readthedocs.org/en/latest/)
- [dos2unix](http://waterlan.home.xs4all.nl/dos2unix.html)
- [doublecpp](http://doublecpp.sourceforge.net/)
- [doubledown](https://github.com/devstructure/doubledown)
- [dovecot](http://dovecot.org/)
- [doxygen](http://www.doxygen.org/)
- [doxymacs](http://doxymacs.sourceforge.net/)
- [dpkg](https://wiki.debian.org/Teams/Dpkg)
- [drake](https://github.com/Factual/drake)
- [drip](https://github.com/flatland/drip)
- [drizzle](http://www.drizzle.org)
- [dromeaudio](http://joshbeam.com/software/dromeaudio/)
- [dropbear](https://matt.ucc.asn.au/dropbear/dropbear.html)
- [dsh](http://www.netfort.gr.jp/~dancer/software/dsh.html.en)
- [dsniff](http://monkey.org/~dugsong/dsniff/)
- [dsocks](http://monkey.org/~dugsong/dsocks/)
- [dtach](http://dtach.sourceforge.net/)
- [dtc](http://www.devicetree.org/)
- [dterm](http://www.knossos.net.nz/resources/free-software/dterm/)
- [dtrx](http://brettcsmith.org/2007/dtrx/)
- [dub](http://code.dlang.org/about)
- [duff](http://duff.sourceforge.net/)
- [duo_unix](https://www.duosecurity.com/docs/duounix)
- [duplicity](http://www.nongnu.org/duplicity/)
- [duply](http://duply.net)
- [dupx](http://www.isi.edu/~yuri/dupx/)
- [duti](http://duti.org/)
- [dvd+rw-tools](http://fy.chalmers.se/~appro/linux/DVD+RW/)
- [dvdauthor](http://dvdauthor.sourceforge.net/)
- [dvdbackup](http://dvdbackup.sourceforge.net)
- [dvdrtools](http://savannah.nongnu.org/projects/dvdrtools/)
- [dvorak7min](http://dvorak7min.sourcearchive.com/)
- [dvtm](http://www.brain-dump.org/projects/dvtm/)
- [dwarf](https://code.google.com/p/dwarf-ng/)
- [dwatch](http://siag.nu/dwatch/)
- [dwdiff](http://os.ghalkes.nl/dwdiff.html)
- [dwm](http://dwm.suckless.org/)
- [dxflib](http://www.ribbonsoft.com/en/what-is-dxflib)
- [dyld-headers](http://opensource.apple.com/)
- [dylibbundler](http://macdylibbundler.sourceforge.net)
- [dynamips](http://www.gns3.net/dynamips/)
- [dynamodb-local](https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Tools.DynamoDBLocal.html)
- [dzen2](http://sites.google.com/site/gotmor/dzen)
#### E
- [e2fsprogs](http://e2fsprogs.sourceforge.net/)
- [easy-git](http://people.gnome.org/~newren/eg/)
- [easy-tag](http://projects.gnome.org/easytag)
- [ec2-ami-tools](http://aws.amazon.com/developertools/368)
- [ec2-api-tools](http://aws.amazon.com/developertools/351)
- [ecasound](http://www.eca.cx/ecasound/)
- [echoping](http://echoping.sourceforge.net/)
- [echoprint-codegen](http://echoprint.me)
- [ecj](http://gcc.gnu.org)
- [ecl](http://ecls.sourceforge.net/)
- [ecm](http://www.neillcorlett.com/ecm/)
- [edelta](http://www.diku.dk/hjemmesider/ansatte/jacobg/edelta/)
- [editorconfig](http://editorconfig.org)
- [ee](http://www.users.qwest.net/~hmahon/)
- [eet](http://trac.enlightenment.org/e/wiki/Eet)
- [eigen](http://eigen.tuxfamily.org/)
- [eina](http://trac.enlightenment.org/e/wiki/Eina)
- [ejabberd](http://www.ejabberd.im)
- [ejdb](http://ejdb.org/)
- [ekg2](http://ekg2.org)
- [ekhtml](http://ekhtml.sourceforge.net/)
- [elasticsearch](http://www.elasticsearch.org)
- [elb-tools](http://aws.amazon.com/developertools/2536)
- [electric-fence](http://perens.com/FreeSoftware/ElectricFence/)
- [elinks](http://elinks.or.cz/)
- [elixir-build](https://github.com/mururu/elixir-build)
- [elixir](http://elixir-lang.org/)
- [emacs-clang-complete-async](https://github.com/Golevka/emacs-clang-complete-async)
- [emacs](http://www.gnu.org/software/emacs/)
- [embryo](http://trac.enlightenment.org/e/wiki/Embryo)
- [emscripten](http://emscripten.org)
- [enca](http://cihar.com/software/enca/)
- [encfs](https://vgough.github.io/encfs/)
- [enchant](http://www.abisource.com/projects/enchant/)
- [enet](http://enet.bespin.org)
- [engine_pkcs11](https://github.com/OpenSC/OpenSC/wiki/OpenSSL-engine-for-PKCS%2311-modules)
- [enscript](http://www.gnu.org/software/enscript/)
- [ent](http://www.fourmilab.ch/random/)
- [entr](http://entrproject.org/)
- [eot-utils](http://www.w3.org/Tools/eot-utils/)
- [epic5](http://www.epicsol.org/)
- [eprover](http://www4.informatik.tu-muenchen.de/~schulz/E/E.html)
- [epsilon](http://epsilon-project.sourceforge.net)
- [epstool](http://pages.cs.wisc.edu/~ghost/gsview/epstool.htm)
- [epubcheck](http://code.google.com/p/epubcheck/)
- [erlang](http://www.erlang.org)
- [es](http://wryun.github.io/es-shell/)
- [esniper](http://sourceforge.net/projects/esniper/)
- [esound](http://www.tux.org/~ricdude/EsounD.html)
- [espeak](http://espeak.sourceforge.net/)
- [etcd](https://github.com/coreos/etcd)
- [etcdctl](https://github.com/coreos/etcdctl)
- [etl](http://synfig.org)
- [ettercap](http://ettercap.github.io/ettercap/)
- [euca2ools](https://github.com/eucalyptus/euca2ools)
- [evas](http://trac.enlightenment.org/e/wiki/Evas)
- [eventlog](http://www.balabit.com/downloads/files/eventlog/)
- [ex-vi](http://ex-vi.sourceforge.net/)
- [exempi](http://libopenraw.freedesktop.org/wiki/Exempi)
- [exenv](https://github.com/mururu/exenv)
- [exif](http://libexif.sourceforge.net/)
- [exiftags](http://johnst.org/sw/exiftags)
- [exiftool](http://www.sno.phy.queensu.ca/~phil/exiftool/index.html)
- [exim](http://exim.org)
- [exiv2](http://www.exiv2.org)
- [exodriver](http://labjack.com/support/linux-and-mac-os-x-drivers)
- [expat](http://expat.sourceforge.net/)
- [ext2fuse](http://sourceforge.net/projects/ext2fuse)
- [ext4fuse](https://github.com/gerard/ext4fuse)
- [eye-d3](http://eyed3.nicfit.net/)
- [ezlupdate](http://ezpedia.org/ez/ezlupdate)
- [ezstream](http://www.icecast.org/ezstream.php)
#### F
- [f3](http://oss.digirati.com.br/f3/)
- [faac](http://www.audiocoding.com/faac.html)
- [faad2](http://www.audiocoding.com/faad2.html)
- [fail2ban](http://www.fail2ban.org/)
- [fakeroot](http://packages.qa.debian.org/f/fakeroot.html)
- [falcon](http://www.falconpl.org/)
- [fantom](http://fantom.org)
- [fasd](https://github.com/clvv/fasd)
- [fastbit](https://sdm.lbl.gov/fastbit/)
- [fastjar](http://sourceforge.net/projects/fastjar/)
- [fatsort](http://fatsort.sourceforge.net/)
- [fb-client](https://paste.xinu.at)
- [fbida](http://linux.bytesex.org/fbida/)
- [fceux](http://fceux.com)
- [fcgi](http://www.fastcgi.com/)
- [fcgiwrap](http://nginx.localdomain.pl/wiki/FcgiWrap)
- [fcrackzip](http://oldhome.schmorp.de/marc/fcrackzip.html)
- [fdclone](http://hp.vector.co.jp/authors/VA012337/soft/fd/)
- [fdk-aac](http://sourceforge.net/projects/opencore-amr/)
- [fdupes](http://code.google.com/p/fdupes/)
- [feh](http://feh.finalrewind.org/)
- [fetch-crl](http://wiki.nikhef.nl/grid/FetchCRL3)
- [fex](http://www.semicomplete.com/projects/fex/)
- [ffind](https://github.com/sjl/friendly-find)
- [ffmbc](http://code.google.com/p/ffmbc/)
- [ffmpeg](https://ffmpeg.org/)
- [ffmpeg2theora](http://v2v.cc/~j/ffmpeg2theora/)
- [ffmpegthumbnailer](http://code.google.com/p/ffmpegthumbnailer/)
- [fftw](http://www.fftw.org)
- [ficy](http://www.thregr.org/~wavexx/software/fIcy/)
- [fig](http://www.fig.sh/)
- [figlet](http://www.figlet.org)
- [figtoipe](http://ipe7.sourceforge.net/)
- [finch](http://developer.pidgin.im/wiki/Using%20Finch)
- [findbugs](http://findbugs.sourceforge.net/index.html)
- [findutils](http://www.gnu.org/software/findutils/)
- [fio](http://freecode.com/projects/fio)
- [fish](http://fishshell.com)
- [fits](http://fitstool.org/)
- [flac](http://xiph.org/flac/)
- [flac123](http://flac-tools.sourceforge.net/)
- [flactag](http://flactag.sourceforge.net/)
- [flake](http://flake-enc.sourceforge.net)
- [flashrom](http://flashrom.org/)
- [flasm](http://www.nowrap.de/flasm.html)
- [flawfinder](http://www.dwheeler.com/flawfinder/)
- [fleet-db](http://fleetdb.org)
- [fleetctl](https://github.com/coreos/fleet)
- [flex](http://flex.sourceforge.net)
- [flickcurl](http://librdf.org/flickcurl/)
- [flow-tools](https://code.google.com/p/flow-tools/)
- [flowgrind](https://launchpad.net/flowgrind)
- [fltk](http://www.fltk.org/)
- [fluid-synth](http://www.fluidsynth.org)
- [flusspferd](http://flusspferd.github.io/)
- [flvmeta](http://www.flvmeta.com)
- [flvstreamer](http://www.nongnu.org/flvstreamer/)
- [fmdiff](http://www.defraine.net/~brunod/fmdiff/)
- [fon-flash-cli](http://www.gargoyle-router.com/wiki/doku.php?id=fon_flash)
- [fondu](http://fondu.sourceforge.net/)
- [fontconfig](http://fontconfig.org/)
- [fontforge](https://fontforge.github.io)
- [fop](http://xmlgraphics.apache.org/fop/index.html)
- [forego](https://github.com/ddollar/forego)
- [foremost](http://foremost.sourceforge.net/)
- [fortune](http://ftp.ibiblio.org/pub/linux/games/amusements/fortune/!INDEX.html)
- [fossil](http://www.fossil-scm.org/)
- [fourstore](http://4store.org/)
- [fox](http://www.fox-toolkit.org/)
- [fpc](http://www.freepascal.org/)
- [fping](http://fping.org/)
- [frag_find](https://github.com/simsong/frag_find)
- [fragroute](http://www.monkey.org/~dugsong/fragroute/)
- [freealut](http://connect.creativelabs.com/openal/Documentation/The%20OpenAL%20Utility%20Toolkit.htm)
- [freediameter](http://www.freediameter.net)
- [freeglut](http://freeglut.sourceforge.net/)
- [freeimage](http://sf.net/projects/freeimage)
- [freeipmi](https://www.gnu.org/software/freeipmi/)
- [freeling](http://nlp.lsi.upc.edu/freeling/)
- [freeradius-server](http://freeradius.org/)
- [freerdp](http://www.freerdp.com/)
- [freeswitch](http://freeswitch.org)
- [freetds](http://www.freetds.org/)
- [freetype](http://www.freetype.org)
- [freexl](https://www.gaia-gis.it/fossil/freexl/index)
- [frege](https://github.com/Frege/frege/)
- [frei0r](http://frei0r.dyne.org)
- [frescobaldi](http://frescobaldi.org/)
- [fribidi](http://fribidi.org/)
- [fsh](http://www.lysator.liu.se/fsh/)
- [fsharp](http://fsharp.org/)
- [fsv](http://fsv.sourceforge.net/)
- [fsw](http://emcrisostomo.github.io/fsw/)
- [fswatch](https://github.com/emcrisostomo/fswatch)
- [ftgl](http://sourceforge.net/projects/ftgl/)
- [ftimes](http://ftimes.sourceforge.net/FTimes/index.shtml)
- [ftjam](http://www.freetype.org/jam/)
- [funcoeszz](http://funcoeszz.net/)
- [fuse-zip](https://code.google.com/p/fuse-zip/)
- [fuse4x-kext](http://fuse4x.github.io)
- [fuse4x](http://fuse4x.github.io)
- [fuseki](http://jena.apache.org/documentation/serving_data/)
- [fuzzy-find](https://github.com/silentbicycle/ff)
- [fwknop](http://www.cipherdyne.org/fwknop/)
- [fzf](https://github.com/junegunn/fzf)
#### G
- [g2](http://orefalo.github.io/g2/)
- [gabedit](http://gabedit.sourceforge.net/)
- [gaffitter](http://gaffitter.sourceforge.net/)
- [gambit-scheme](http://dynamo.iro.umontreal.ca/~gambit/wiki/index.php/Main_Page)
- [gammu](http://wammu.eu/gammu/)
- [ganglia](http://ganglia.sourceforge.net/)
- [gant](http://gant.codehaus.org/)
- [garmintools](http://code.google.com/p/garmintools/)
- [gauche](http://practical-scheme.net/gauche/)
- [gaul](http://gaul.sourceforge.net/)
- [gawk](http://www.gnu.org/software/gawk/)
- [gbdfed](http://sofia.nmsu.edu/~mleisher/Software/gbdfed/)
- [gcab](https://wiki.gnome.org/msitools)
- [gcal](http://www.gnu.org/software/gcal/)
- [gcc](http://gcc.gnu.org)
- [gconf](http://projects.gnome.org/gconf/)
- [gcore](http://osxbook.com/book/bonus/chapter8/core/)
- [gcutil](https://developers.google.com/compute/docs/gcutil/)
- [gd](http://libgd.bitbucket.org/)
- [gdal-grass](http://www.gdal.org)
- [gdal](http://www.gdal.org/)
- [gdbm](http://www.gnu.org/software/gdbm/)
- [gdk-pixbuf](http://gtk.org)
- [gdmap](http://sourceforge.net/projects/gdmap/)
- [geany](http://geany.org/)
- [gearman](http://gearman.org/)
- [gecode](http://www.gecode.org/)
- [geda-gaf](http://www.geda-project.org/)
- [geeqie](http://geeqie.sourceforge.net/)
- [gegl](http://www.gegl.org/)
- [genders](https://computing.llnl.gov/linux/genders.html)
- [gengetopt](http://www.gnu.org/software/gengetopt/)
- [genstats](http://www.vanheusden.com/genstats/)
- [geocouch](https://github.com/couchbase/geocouch)
- [geogit](http://www.geogit.org)
- [geographiclib](http://geographiclib.sourceforge.net/)
- [geoip](https://github.com/maxmind/geoip-api-c)
- [geoipupdate](https://github.com/maxmind/geoipupdate)
- [geomview](http://www.geomview.org)
- [geos](http://trac.osgeo.org/geos)
- [geoserver](http://geoserver.org/)
- [gerbv](http://gerbv.gpleda.org/)
- [getdns](http://getdnsapi.net)
- [getmail](http://pyropus.ca/software/getmail/)
- [gettext](https://www.gnu.org/software/gettext/)
- [getxbook](http://njw.me.uk/software/getxbook/)
- [gflags](http://code.google.com/p/google-gflags/)
- [gforth](http://www.gnu.org/software/gforth/)
- [ggobi](http://www.ggobi.org)
- [gh](https://github.com/jingweno/gh)
- [ghc](http://haskell.org/ghc/)
- [ghi](https://github.com/stephencelis/ghi)
- [ghostscript](http://www.ghostscript.com/)
- [gibbslda](http://gibbslda.sourceforge.net/)
- [giblib](http://freshmeat.net/projects/giblib)
- [gibo](https://github.com/simonwhitaker/gibo)
- [giflib](http://giflib.sourceforge.net/)
- [gifsicle](http://www.lcdf.org/gifsicle/)
- [ginac](http://www.ginac.de/)
- [gist](https://github.com/defunkt/gist)
- [gistit](http://gistit.herokuapp.com/)
- [git-annex](https://git-annex.branchable.com/)
- [git-archive-all](https://github.com/Kentzo/git-archive-all)
- [git-cal](https://github.com/k4rthik/git-cal)
- [git-cola](http://git-cola.github.io/)
- [git-crypt](http://www.agwa.name/projects/git-crypt/)
- [git-encrypt](https://github.com/shadowhand/git-encrypt)
- [git-extras](https://github.com/visionmedia/git-extras)
- [git-flow-avh](https://github.com/petervanderdoes/gitflow)
- [git-flow-clone](https://github.com/ashirazi/git-flow-clone)
- [git-flow](https://github.com/nvie/gitflow)
- [git-ftp](http://git-ftp.github.io/git-ftp)
- [git-gerrit](https://github.com/fbzhong/git-gerrit)
- [git-imerge](https://github.com/mhagger/git-imerge)
- [git-integration](http://johnkeeping.github.io/git-integration/)
- [git-latexdiff](https://gitorious.org/git-latexdiff)
- [git-multipush](http://code.google.com/p/git-multipush/)
- [git-now](https://github.com/iwata/git-now)
- [git-number](https://github.com/holygeek/git-number)
- [git-open](https://github.com/jeffreyiacono/git-open)
- [git-sh](https://github.com/rtomayko/git-sh)
- [git-ssh](https://github.com/lemarsu/git-ssh)
- [git-tf](http://gittf.codeplex.com/)
- [git-tracker](https://github.com/stevenharman/git_tracker)
- [git-url-sub](http://gosuri.github.io/git-url-sub)
- [git](http://git-scm.com)
- [gitbucket](https://github.com/takezoe/gitbucket)
- [giter8](https://github.com/n8han/giter8)
- [github-release](https://github.com/aktau/github-release)
- [gitslave](http://gitslave.sourceforge.net)
- [gkrellm](http://members.dslextreme.com/users/billw/gkrellm/gkrellm.html)
- [gl2ps](http://www.geuz.org/gl2ps/)
- [glade](http://glade.gnome.org/)
- [glassfish](https://glassfish.java.net)
- [gle](http://glx.sourceforge.net/)
- [glew](http://glew.sourceforge.net/)
- [glib-networking](https://launchpad.net/glib-networking)
- [glib](http://developer.gnome.org/glib/)
- [glibmm](http://www.gtkmm.org/)
- [glm](http://glm.g-truc.net/)
- [global](https://www.gnu.org/software/global/)
- [globus-toolkit](http://www.globus.org/toolkit/)
- [glog](http://code.google.com/p/google-glog/)
- [gloox](http://camaya.net/gloox/)
- [glui](http://glui.sourceforge.net/)
- [gmail-backup](http://www.gmail-backup.com/)
- [gmediaserver](http://www.gnu.org/software/gmediaserver/)
- [gmime](http://spruce.sourceforge.net/gmime/)
- [gmp](http://gmplib.org/)
- [gmtl](http://ggt.sourceforge.net/)
- [gnome-common](http://git.gnome.org/browse/gnome-common/)
- [gnome-doc-utils](https://live.gnome.org/GnomeDocUtils)
- [gnome-icon-theme](https://developer.gnome.org)
- [gnu-apl](http://www.gnu.org/software/apl/)
- [gnu-barcode](http://www.gnu.org/software/barcode/)
- [gnu-cobol](http://www.opencobol.org/)
- [gnu-getopt](http://software.frodo.looijaard.name/getopt/)
- [gnu-indent](http://www.gnu.org/software/indent/)
- [gnu-prolog](http://www.gprolog.org/)
- [gnu-sed](http://www.gnu.org/software/sed/)
- [gnu-smalltalk](http://smalltalk.gnu.org/)
- [gnu-tar](http://www.gnu.org/software/tar/)
- [gnu-time](http://www.gnu.org/software/time/)
- [gnu-typist](https://www.gnu.org/software/gtypist/)
- [gnu-units](http://www.gnu.org/software/units/)
- [gnu-which](http://carlo17.home.xs4all.nl/which/)
- [gnumeric](http://projects.gnome.org/gnumeric/)
- [gnunet](https://gnunet.org/)
- [gnupg-pkcs11-scd](http://gnupg-pkcs11.sourceforge.net)
- [gnupg](http://www.gnupg.org/)
- [gnupg2](https://www.gnupg.org/)
- [gnuplot](http://www.gnuplot.info)
- [gnustep-make](http://gnustep.org)
- [gnutls](http://gnutls.org)
- [go-app-engine-32](http://code.google.com/appengine/docs/go/overview.html)
- [go-app-engine-64](http://code.google.com/appengine/docs/go/overview.html)
- [go](http://golang.org)
- [goaccess](http://goaccess.prosoftcorp.com/)
- [gobby](http://gobby.0x539.de)
- [gobject-introspection](http://live.gnome.org/GObjectIntrospection)
- [gocr](http://jocr.sourceforge.net/)
- [goffice](http://projects.gnome.org/gnumeric/)
- [golo](http://golo-lang.org)
- [goocanvas](https://live.gnome.org/GooCanvas)
- [google-app-engine](https://developers.google.com/appengine/)
- [google-perftools](http://code.google.com/p/gperftools/)
- [google-sparsehash](http://code.google.com/p/google-sparsehash/)
- [google-sql-tool](https://developers.google.com/cloud-sql/docs/commandline)
- [googlecl](https://code.google.com/p/googlecl/)
- [gosu](http://gosu-lang.org/)
- [gource](http://code.google.com/p/gource/)
- [gpac](http://gpac.wp.mines-telecom.fr/)
- [gpg-agent](https://www.gnupg.org/)
- [gpgme](http://www.gnupg.org/related_software/gpgme/)
- [gphoto2](http://gphoto.org/)
- [gplcver](http://gplcver.sourceforge.net/)
- [gpm](https://github.com/pote/gpm)
- [gpp](http://en.nothingisreal.com/wiki/GPP)
- [gpredict](http://gpredict.oz9aec.net/)
- [gpsbabel](http://www.gpsbabel.org)
- [gpsd](http://catb.org/gpsd/)
- [gpsim](http://gpsim.sourceforge.net/)
- [gptfdisk](http://www.rodsbooks.com/gdisk/)
- [gptsync](http://refit.sourceforge.net/)
- [gputils](http://gputils.sourceforge.net/)
- [gqlplus](http://gqlplus.sourceforge.net/)
- [gqview](http://gqview.sourceforge.net)
- [grace](http://plasma-gate.weizmann.ac.il/Grace/)
- [gradle](http://www.gradle.org/)
- [grails](http://grails.org)
- [grap](http://www.lunabase.org/~faber/Vault/software/grap/)
- [graphicsmagick](http://www.graphicsmagick.org/)
- [graphviz](http://graphviz.org/)
- [grass](http://grass.osgeo.org/)
- [graylog2-server](http://www.graylog2.org/)
- [grc](http://korpus.juls.savba.sk/~garabik/software/grc.html)
- [grepcidr](http://www.pc-tools.net/unix/grepcidr/)
- [grib-api](https://software.ecmwf.int/wiki/display/GRIB/Home)
- [griffon](http://griffon.codehaus.org/)
- [gringo](http://potassco.sourceforge.net/)
- [grok](https://github.com/jordansissel/grok)
- [groonga-normalizer-mysql](https://github.com/groonga/groonga-normalizer-mysql)
- [groonga](http://groonga.org/)
- [groovy](http://groovy.codehaus.org/)
- [groovyserv](http://kobo.github.io/groovyserv/)
- [growly](https://github.com/ryankee/growly)
- [grsync](http://sourceforge.net/projects/grsync/)
- [gsasl](http://www.gnu.org/software/gsasl/)
- [gsettings-desktop-schemas](http://ftp.gnome.org/pub/GNOME/sources/gsettings-desktop-schemas/)
- [gsl](http://www.gnu.org/software/gsl/)
- [gsmartcontrol](http://gsmartcontrol.sourceforge.net/home/index.php)
- [gsoap](http://www.cs.fsu.edu/~engelen/soap.html)
- [gssdp](https://wiki.gnome.org/GUPnP/)
- [gst-libav](http://gstreamer.freedesktop.org)
- [gst-plugins-bad](http://gstreamer.freedesktop.org/)
- [gst-plugins-base](http://gstreamer.freedesktop.org/)
- [gst-plugins-good](http://gstreamer.freedesktop.org/)
- [gst-plugins-ugly](http://gstreamer.freedesktop.org/)
- [gstreamer](http://gstreamer.freedesktop.org/)
- [gti](http://r-wos.org/hacks/gti)
- [gtk+](http://gtk.org/)
- [gtk+3](http://gtk.org/)
- [gtk-chtheme](http://plasmasturm.org/code/gtk-chtheme/)
- [gtk-doc](http://www.gtk.org/gtk-doc/)
- [gtk-engines](http://git.gnome.org/browse/gtk-engines/)
- [gtk-gnutella](http://gtk-gnutella.sourceforge.net/en/?page=news)
- [gtk-murrine-engine](https://github.com/GNOME/murrine)
- [gtkdatabox](http://sourceforge.net/projects/gtkdatabox/)
- [gtkglarea](https://github.com/GNOME/gtkglarea)
- [gtkglext](http://projects.gnome.org/gtkglext/)
- [gtkglextmm](http://projects.gnome.org/gtkglext)
- [gtkmm](http://www.gtkmm.org/)
- [gtkmm3](http://www.gtkmm.org/)
- [gtksourceview](http://projects.gnome.org/gtksourceview/)
- [gtksourceview3](http://projects.gnome.org/gtksourceview/)
- [gtksourceviewmm](https://developer.gnome.org/gtksourceviewmm/)
- [gtksourceviewmm3](https://developer.gnome.org/gtksourceviewmm/)
- [gtkspell3](http://gtkspell.sourceforge.net/)
- [gtkwave](http://gtkwave.sourceforge.net/)
- [gtmess](http://gtmess.sourceforge.net/)
- [gts](http://gts.sourceforge.net/)
- [guile](http://www.gnu.org/software/guile/)
- [guilt](http://packages.debian.org/wheezy/guilt)
- [gupnp-av](https://wiki.gnome.org/GUPnP/)
- [gupnp-tools](https://wiki.gnome.org/GUPnP/)
- [gupnp](https://wiki.gnome.org/GUPnP/)
- [gv](http://www.gnu.org/s/gv/)
- [gvp](https://github.com/pote/gvp)
- [gwenhywfar](http://www.aqbanking.de/)
- [gwt](https://developers.google.com/web-toolkit/)
- [gwyddion](http://gwyddion.net/)
- [gzrt](http://www.urbanophile.com/arenn/coding/gzrt/gzrt.html)
#### H
- [h2](http://www.h2database.com/)
- [h264bitstream](http://h264bitstream.sourceforge.net/)
- [hachoir-metadata](https://bitbucket.org/haypo/hachoir/wiki/Home)
- [hadoop](http://hadoop.apache.org/)
- [halibut](http://www.chiark.greenend.org.uk/~sgtatham/halibut/)
- [hamlib](http://hamlib.sourceforge.net)
- [hamsterdb](http://hamsterdb.com)
- [haproxy](http://haproxy.1wt.eu)
- [harbour](https://harbour.github.io)
- [hardlink](http://jak-linux.org/projects/hardlink/)
- [harfbuzz](http://www.freedesktop.org/wiki/Software/HarfBuzz)
- [hashpump](https://github.com/bwall/HashPump)
- [hatari](http://hatari.tuxfamily.org)
- [haxe](http://haxe.org)
- [hbase](http://hbase.apache.org)
- [headphones](https://github.com/rembo10/headphones)
- [hello](http://www.gnu.org/software/hello/)
- [help2man](http://www.gnu.org/software/help2man/)
- [henplus](https://github.com/neurolabs/henplus)
- [hercules](http://www.hercules-390.eu/)
- [heroku-toolbelt](https://toolbelt.heroku.com/other)
- [herrie](http://herrie.info/)
- [hevea](http://hevea.inria.fr/)
- [hexchat](http://hexchat.github.io/)
- [hexcurse](https://github.com/LonnyGomes/hexcurse)
- [hexedit](http://rigaux.org/hexedit.html)
- [hfsutils](http://www.mars.org/home/rob/proj/hfs/)
- [hg-flow](https://bitbucket.org/yujiewu/hgflow)
- [hicolor-icon-theme](http://icon-theme.freedesktop.org/wiki/HicolorTheme)
- [hidapi](https://github.com/signal11/hidapi)
- [highlight](http://www.andre-simon.de/doku/highlight/en/highlight.html)
- [hilite](http://sourceforge.net/projects/hilite/)
- [hiredis](https://github.com/redis/hiredis)
- [hive](http://hive.apache.org)
- [hllib](http://nemesis.thewavelength.net/index.php?p=35)
- [hoedown](https://github.com/hoedown/hoedown)
- [homebank](http://homebank.free.fr)
- [honeyd](http://honeyd.org/)
- [horndis](http://joshuawise.com/horndis)
- [hornetq](http://www.jboss.org/hornetq)
- [hostdb](http://code.google.com/p/hostdb/)
- [hping](http://www.hping.org/)
- [hqx](http://code.google.com/p/hqx/)
- [hr](https://github.com/LuRsT/hr)
- [ht](http://hte.sf.net/)
- [html-xml-utils](http://www.w3.org/Tools/HTML-XML-utils/)
- [html2text](http://www.mbayer.de/html2text/)
- [htmlcleaner](http://htmlcleaner.sourceforge.net/index.php)
- [htmlcompressor](http://code.google.com/p/htmlcompressor/)
- [htmlcxx](http://htmlcxx.sourceforge.net/)
- [htmldoc](http://www.msweet.org/projects.php?Z1)
- [htop-osx](https://github.com/max-horvath/htop-osx)
- [htpdate](http://www.vervest.org/fiki/bin/view/HTP)
- [http_load](http://www.acme.com/software/http_load/)
- [httperf](http://code.google.com/p/httperf/)
- [httpie](http://httpie.org)
- [httping](http://www.vanheusden.com/httping/)
- [httpry](http://dumpsterventures.com/jason/httpry/)
- [httptunnel](http://www.nocrew.org/software/httptunnel.html)
- [httrack](http://www.httrack.com/)
- [hub](http://hub.github.com/)
- [hubflow](http://datasift.github.io/gitflow/)
- [hugo](http://hugo.spf13.com/)
- [hugs98](http://www.haskell.org/hugs/)
- [hunspell](http://hunspell.sourceforge.net/)
- [hydra](http://www.thc.org/thc-hydra/)
- [hyperestraier](http://fallabs.com/hyperestraier/index.html)
- [hyperspec](http://www.lispworks.com/documentation/common-lisp.html)
#### I
- [iat](http://iat.berlios.de/)
- [ical-buddy](http://hasseg.org/icalBuddy/)
- [icarus-verilog](http://iverilog.icarus.com/)
- [icbirc](http://www.benzedrine.cx/icbirc.html)
- [ice](http://www.zeroc.com)
- [icecast](http://www.icecast.org/)
- [icon-naming-utils](http://tango.freedesktop.org/)
- [icon](http://www.cs.arizona.edu/icon/)
- [icoutils](http://www.nongnu.org/icoutils/)
- [icu4c](http://site.icu-project.org/)
- [id3lib](http://id3lib.sourceforge.net/)
- [id3tool](http://nekohako.xware.cx/id3tool/)
- [id3v2](http://id3v2.sourceforge.net/)
- [idcomments](http://tools.ietf.org/tools/idcomments/)
- [ideviceinstaller](http://www.libimobiledevice.org/)
- [idnits](http://tools.ietf.org/tools/idnits/)
- [idutils](http://www.gnu.org/s/idutils/)
- [ievms](http://xdissent.github.io/ievms/)
- [ifstat](http://gael.roualland.free.fr/ifstat/)
- [iftop](http://www.ex-parrot.com/~pdw/iftop/)
- [ifuse](http://www.libimobiledevice.org/)
- [ii](http://tools.suckless.org/ii)
- [ike-scan](http://www.nta-monitor.com/tools/ike-scan/)
- [ilmbase](http://www.openexr.com/)
- [imagemagick](http://www.imagemagick.org)
- [imagesnap](http://iharder.sourceforge.net/current/macosx/imagesnap/)
- [imageworsener](http://entropymine.com/imageworsener/)
- [imake](http://xorg.freedesktop.org)
- [imap-uw](http://www.washington.edu/imap/)
- [imapfilter](https://github.com/lefcha/imapfilter/)
- [imapsync](http://ks.lamiral.info/imapsync/)
- [imlib2](http://sourceforge.net/projects/enlightenment/files/)
- [influxdb](http://influxdb.org)
- [iniparser](http://ndevilla.free.fr/iniparser/)
- [inkscape](http://inkscape.org/)
- [innoextract](http://constexpr.org/innoextract/)
- [innotop](http://code.google.com/p/innotop/)
- [ino](http://inotool.org)
- [inspircd](http://www.inspircd.org)
- [intercal](http://catb.org/~esr/intercal/)
- [intltool](http://www.freedesktop.org/wiki/Software/intltool)
- [io](http://iolanguage.com/)
- [iodine](http://code.kryo.se/iodine/)
- [ioke](http://ioke.org/)
- [ioping](http://code.google.com/p/ioping/)
- [ios-sim](https://github.com/phonegap/ios-sim)
- [ios-webkit-debug-proxy](https://github.com/google/ios-webkit-debug-proxy)
- [iozone](http://www.iozone.org/)
- [ip_relay](http://www.stewart.com.au/ip_relay/)
- [ipbt](http://www.chiark.greenend.org.uk/~sgtatham/ipbt/)
- [ipcalc](http://jodies.de/ipcalc)
- [ipe](http://ipe7.sourceforge.net)
- [iperf](http://iperf.sourceforge.net/)
- [iperf3](https://github.com/esnet/iperf)
- [iphotoexport](http://code.google.com/p/iphotoexport/)
- [ipinfo](http://kyberdigi.cz/projects/ipinfo/)
- [ipmitool](http://ipmitool.sourceforge.net/)
- [ipmiutil](http://ipmiutil.sourceforge.net/)
- [iprint](http://www.samba.org/ftp/unpacked/junkcode/i.c)
- [iptux](https://github.com/iptux-src/iptux)
- [ipv6calc](http://www.deepspace6.net/projects/ipv6calc.html)
- [ipv6toolkit](http://www.si6networks.com/tools/ipv6toolkit/)
- [ircd-hybrid](http://www.ircd-hybrid.org/)
- [ircd-irc2](http://www.irc.org/)
- [ircii](http://www.eterna.com.au/ircii/)
- [irods](https://www.irods.org)
- [irrlicht](http://irrlicht.sourceforge.net/)
- [irrtoolset](http://irrtoolset.isc.org/)
- [irssi](http://irssi.org/)
- [isc-dhcp](http://www.isc.org/software/dhcp)
- [isl](http://freecode.com/projects/isl)
- [iso-codes](http://pkg-isocodes.alioth.debian.org/)
- [ispc](http://ispc.github.io)
- [ispell](http://lasr.cs.ucla.edu/geoff/ispell.html)
- [isync](http://isync.sourceforge.net/)
- [itex2mml](http://golem.ph.utexas.edu/~distler/blog/itex2MML.html)
- [itpp](http://itpp.sourceforge.net)
- [itsol](http://www-users.cs.umn.edu/~saad/software/ITSOL)
- [itstool](http://itstool.org/)
- [iulib](http://code.google.com/p/iulib/)
- [ivy](http://ant.apache.org/ivy/)
#### J
- [jack](http://jackaudio.org)
- [jags](http://mcmc-jags.sourceforge.net)
- [jailkit](http://olivier.sessink.nl/jailkit/)
- [jam](http://www.perforce.com/resources/documentation/jam)
- [jansson](http://www.digip.org/jansson/)
- [jasmin](http://jasmin.sourceforge.net/)
- [jasper](http://www.ece.uvic.ca/~frodo/jasper/)
- [javarepl](https://github.com/albertlatacz/java-repl)
- [jbake](http://jbake.org)
- [jbig2dec](http://jbig2dec.sourceforge.net)
- [jbig2enc](https://github.com/agl/jbig2enc)
- [jbigkit](http://www.cl.cam.ac.uk/~mgk25/jbigkit/)
- [jboss-as](http://www.jboss.org/jbossas)
- [jboss-forge](http://forge.jboss.org/)
- [jcal](http://savannah.nongnu.org/projects/jcal/)
- [jed](http://www.jedsoft.org/jed/)
- [jemalloc](http://www.canonware.com/jemalloc/download.html)
- [jena](http://jena.apache.org/)
- [jenkins](http://jenkins-ci.org)
- [jerm](http://www.bsddiary.net/jerm/)
- [jetty-runner](http://www.eclipse.org/jetty/documentation/9.2.2.v20140723/runner.html)
- [jetty](http://www.eclipse.org/jetty/)
- [jhead](http://www.sentex.net/~mwandel/jhead/)
- [jhiccup](http://www.jhiccup.com)
- [jigdo](http://atterer.org/jigdo/)
- [jing](http://code.google.com/p/jing-trang/)
- [jless](http://www.greenwoodsoftware.com/less/)
- [jmeter](http://jmeter.apache.org/)
- [jmxtrans](https://github.com/jmxtrans/jmxtrans)
- [jnettop](http://jnettop.kubs.info/)
- [joe](http://joe-editor.sourceforge.net/index.html)
- [john-jumbo](http://www.openwall.com/john/)
- [john](http://www.openwall.com/john/)
- [jove](http://directory.fsf.org/wiki/Jove)
- [jp2a](http://csl.sublevel3.org/jp2a/)
- [jpeg-turbo](http://www.libjpeg-turbo.org/)
- [jpeg](http://www.ijg.org)
- [jpeginfo](http://www.kokkonen.net/tjko/projects.html)
- [jpegoptim](https://github.com/tjko/jpegoptim)
- [jq](http://stedolan.github.io/jq/)
- [jruby](http://www.jruby.org)
- [js-test-driver](http://code.google.com/p/js-test-driver/)
- [jsawk](https://github.com/micha/jsawk)
- [jscoverage](http://siliconforks.com/jscoverage/)
- [jsdoc-toolkit](http://code.google.com/p/jsdoc-toolkit/)
- [jsdoc3](http://usejsdoc.org/)
- [jshon](http://kmkeen.com/jshon/)
- [jslint4java](http://code.google.com/p/jslint4java/)
- [jsmin](http://www.crockford.com/javascript/jsmin.html)
- [json-c](https://github.com/json-c/json-c/wiki)
- [json-glib](http://live.gnome.org/JsonGlib)
- [json_spirit](http://www.codeproject.com/KB/recipes/JSON_Spirit.aspx)
- [jsonpp](http://jmhodges.github.io/jsonpp/)
- [jstalk](http://jstalk.org/)
- [jsvc](http://commons.apache.org/daemon/jsvc.html)
- [judy](http://judy.sourceforge.net/)
- [juise](https://github.com/Juniper/juise/wiki)
- [juju-quickstart](https://launchpad.net/juju-quickstart)
- [juju](https://juju.ubuntu.com)
- [justniffer](http://justniffer.sourceforge.net/)
- [jvmtop](https://code.google.com/p/jvmtop/)
- [jwhois](http://directory.fsf.org/project/jwhois/)
- [jython](http://www.jython.org)
#### K
- [kafka](http://kafka.apache.org)
- [kakasi](http://www.namazu.org/)
- [kanif](http://taktuk.gforge.inria.fr/kanif/)
- [kawa](http://www.gnu.org/software/kawa/)
- [kbtin](http://kbtin.sourceforge.net)
- [kde-phonon](http://phonon.kde.org/)
- [kdebase-runtime](http://www.kde.org/)
- [kdelibs](http://www.kde.org/)
- [kdiff3](http://kdiff3.sourceforge.net/)
- [keepassc](http://raymontag.github.com/keepassc/)
- [kernagic](https://github.com/hodefoting/kernagic/)
- [kes](https://github.com/epilnivek/kes)
- [kestrel](http://robey.github.io/kestrel/)
- [keybase](https://keybase.io/)
- [keychain](http://www.funtoo.org/wiki/Keychain)
- [kimwitu++](http://www2.informatik.hu-berlin.de/sam/kimwitu++/)
- [kismet](http://www.kismetwireless.net)
- [kite](http://www.kite-language.org/)
- [kjell](http://karlll.github.io/kjell/)
- [klavaro](http://klavaro.sourceforge.net/)
- [knock](http://www.zeroflux.org/projects/knock)
- [knot](https://www.knot-dns.cz/)
- [known_hosts](https://github.com/markmcconachie/known_hosts)
- [konoha](http://www.konohascript.org/)
- [kqwait](https://github.com/sschober/kqwait)
- [ksh](http://www.kornshell.com)
- [kstart](http://www.eyrie.org/~eagle/software/kstart/)
- [ktoblzcheck](http://ktoblzcheck.sourceforge.net/)
- [kumofs](http://kumofs.sourceforge.net/)
- [kvazaar](https://github.com/ultravideo/kvazaar)
- [kyoto-cabinet](http://fallabs.com/kyotocabinet/)
- [kyoto-tycoon](http://fallabs.com/kyototycoon/)
- [kytea](http://www.phontron.com/kytea/)
#### L
- [l-smash](http://l-smash.github.io/l-smash/)
- [lablgtk](http://wwwfun.kurims.kyoto-u.ac.jp/soft/lsl/lablgtk.html)
- [lame](http://lame.sourceforge.net/)
- [languagetool](http://www.languagetool.org/)
- [lasi](http://www.unifont.org/lasi/)
- [lastfmfpclient](https://github.com/lastfm/Fingerprinter)
- [lastfmlib](http://code.google.com/p/lastfmlib/)
- [laszip](http://www.laszip.org/)
- [latex-mk](http://latex-mk.sourceforge.net/index.html)
- [latex2html](http://ctan.uib.no/help/Catalogue/entries/latex2html.html)
- [latex2rtf](http://latex2rtf.sourceforge.net/)
- [launch](http://web.sabi.net/nriley/software/)
- [launch4j](http://launch4j.sourceforge.net/)
- [lbdb](https://github.com/tgray/lbdb/)
- [lbzip2](https://github.com/kjn/lbzip2)
- [lcdf-typetools](http://www.lcdf.org/type/)
- [lcdproc](http://www.lcdproc.org/)
- [lci](http://lci.sourceforge.net/)
- [lcov](http://ltp.sourceforge.net/coverage/lcov.php)
- [lcrack](http://packages.debian.org/sid/lcrack)
- [ld64](http://opensource.apple.com/)
- [ldapvi](http://www.lichteblau.com/ldapvi/)
- [ldc](http://wiki.dlang.org/LDC)
- [ldns](http://nlnetlabs.nl/projects/ldns/)
- [le](http://freecode.com/projects/leeditor)
- [leafnode](http://sourceforge.net/projects/leafnode/)
- [ledger](http://ledger-cli.org)
- [ledit](http://pauillac.inria.fr/~ddr/ledit/)
- [legit](http://www.git-legit.org/)
- [leiningen](https://github.com/technomancy/leiningen)
- [lemon](http://www.hwaci.com/sw/lemon/)
- [lensfun](http://lensfun.sourceforge.net/)
- [leptonica](http://www.leptonica.org/)
- [lesspipe](http://www-zeuthen.desy.de/~friebel/unix/lesspipe.html)
- [lesstif](http://lesstif.sourceforge.net)
- [leveldb](https://code.google.com/p/leveldb/)
- [lft](http://pwhois.org/lft/)
- [lftp](http://lftp.yar.ru/)
- [lha](http://lha.sourceforge.jp/)
- [lhasa](http://fragglet.github.io/lhasa/)
- [lib3ds](http://code.google.com/p/lib3ds/)
- [libaacs](https://www.videolan.org/developers/libaacs.html)
- [libagg](http://www.antigrain.com)
- [libantlr3c](http://www.antlr3.org)
- [libao](http://www.xiph.org/ao/)
- [libarchive](http://www.libarchive.org)
- [libart](http://freshmeat.net/projects/libart/)
- [libass](https://github.com/libass/libass)
- [libassuan](http://www.gnupg.org/related_software/libassuan/index.en.html)
- [libatomic_ops](https://github.com/ivmai/libatomic_ops/)
- [libav](https://libav.org/)
- [libb2](https://blake2.net)
- [libbind](https://www.isc.org/software/libbind)
- [libbinio](http://libbinio.sf.net)
- [libbluray](https://www.videolan.org/developers/libbluray.html)
- [libbs2b](http://bs2b.sourceforge.net/)
- [libbson](https://github.com/mongodb/libbson)
- [libbtbb](https://github.com/greatscottgadgets/libbtbb)
- [libcaca](http://caca.zoy.org/wiki/libcaca)
- [libcanberra](http://0pointer.de/lennart/projects/libcanberra/)
- [libcapn](http://libcapn.org/)
- [libcddb](http://libcddb.sourceforge.net/)
- [libcdio](http://www.gnu.org/software/libcdio/)
- [libcec](http://libcec.pulse-eight.com/)
- [libcello](http://libcello.org/)
- [libcmph](http://cmph.sourceforge.net)
- [libcoap](http://libcoap.sourceforge.net)
- [libconfig](http://www.hyperrealm.com/libconfig/)
- [libcouchbase](http://couchbase.com/communities/c)
- [libcppa](http://libcppa.blogspot.it)
- [libcroco](http://www.linuxfromscratch.org/blfs/view/svn/general/libcroco.html)
- [libcsv](http://sourceforge.net/projects/libcsv/)
- [libcue](http://sourceforge.net/projects/libcue/)
- [libcuefile](http://www.musepack.net/)
- [libdaemon](http://0pointer.de/lennart/projects/libdaemon/)
- [libdap](http://www.opendap.org)
- [libdbusmenu-qt](https://launchpad.net/libdbusmenu-qt)
- [libdc1394](http://damien.douxchamps.net/ieee1394/libdc1394/)
- [libdca](http://www.videolan.org/developers/libdca.html)
- [libdiscid](http://musicbrainz.org/doc/libdiscid)
- [libdlna](http://libdlna.geexbox.org/)
- [libdmtx](http://www.libdmtx.org)
- [libdnet](http://code.google.com/p/libdnet/)
- [libdrawtext](http://nuclear.mutantstargoat.com/sw/libdrawtext/)
- [libdshconfig](http://www.netfort.gr.jp/~dancer/software/dsh.html.en)
- [libdsk](http://www.seasip.info/Unix/LibDsk/)
- [libdv](http://libdv.sourceforge.net)
- [libdvbpsi](http://www.videolan.org/developers/libdvbpsi.html)
- [libdvdcss](http://www.videolan.org/developers/libdvdcss.html)
- [libdvdnav](https://dvdnav.mplayerhq.hu/)
- [libdvdread](https://dvdnav.mplayerhq.hu/)
- [libebml](http://www.matroska.org/)
- [libebur128](https://github.com/jiixyj/libebur128)
- [libechonest](https://projects.kde.org/projects/playground/libs/libechonest)
- [libelf](http://www.mr511.de/software/)
- [libestr](http://libestr.adiscon.com)
- [libetonyek](https://wiki.documentfoundation.org/DLP/Libraries/libetonyek)
- [libev](http://software.schmorp.de/pkg/libev.html)
- [libevent](http://libevent.org)
- [libewf](http://code.google.com/p/libewf/)
- [libexif](http://libexif.sourceforge.net/)
- [libexosip](http://www.antisip.com/as/)
- [libextractor](http://www.gnu.org/software/libextractor/)
- [libfaketime](http://www.code-wizards.com/projects/libfaketime)
- [libffi](http://sourceware.org/libffi/)
- [libfishsound](http://xiph.org/fishsound/)
- [libfixbuf](http://tools.netsa.cert.org/fixbuf/)
- [libflowmanager](http://research.wand.net.nz/software/libflowmanager.php)
- [libfreefare](https://code.google.com/p/libfreefare/)
- [libfreenect](http://openkinect.org)
- [libftdi](http://www.intra2net.com/en/developer/libftdi)
- [libftdi0](http://www.intra2net.com/en/developer/libftdi)
- [libgadu](http://libgadu.net/)
- [libgaiagraphics](https://www.gaia-gis.it/fossil/libgaiagraphics/index)
- [libgcrypt](https://gnupg.org/)
- [libgda](http://www.gnome-db.org/)
- [libgee](https://wiki.gnome.org/Projects/Libgee)
- [libgeotiff](http://geotiff.osgeo.org/)
- [libgetdata](http://getdata.sourceforge.net/)
- [libgfshare](http://www.digital-scurf.org/software/libgfshare)
- [libgit2](http://libgit2.github.com/)
- [libglade](http://glade.gnome.org)
- [libglademm](http://gnome.org)
- [libgnomecanvas](http://developer.gnome.org/libgnomecanvas/2.30/)
- [libgnomecanvasmm](https://launchpad.net/libgnomecanvasmm)
- [libgpg-error](http://www.gnupg.org/)
- [libgphoto2](http://www.gphoto.org/proj/libgphoto2/)
- [libgsf](http://projects.gnome.org/gnumeric/)
- [libgsm](http://www.quut.com/gsm/)
- [libgtop](http://library.gnome.org/devel/libgtop/stable/)
- [libharu](http://www.libharu.org)
- [libhid](http://libhid.alioth.debian.org/)
- [libical](http://www.citadel.org/doku.php/documentation:featured_projects:libical)
- [libicns](http://icns.sourceforge.net/)
- [libid3tag](http://www.underbit.com/products/mad/)
- [libident](http://www.remlab.net/libident/)
- [libidl](http://ftp.acc.umu.se/pub/gnome/sources/libIDL/0.8/)
- [libidn](http://www.gnu.org/software/libidn/)
- [libimobiledevice](http://www.libimobiledevice.org/)
- [libinfinity](http://gobby.0x539.de/trac/wiki/Infinote/Libinfinity)
- [libiptcdata](http://libiptcdata.sourceforge.net/)
- [libiscsi](https://github.com/sahlberg/libiscsi)
- [libkate](http://code.google.com/p/libkate/)
- [libkml](http://code.google.com/p/libkml/)
- [libksba](http://www.gnupg.org/related_software/libksba/index.en.html)
- [liblacewing](http://lacewing-project.org/)
- [liblas](http://liblas.org)
- [liblastfm](https://github.com/lastfm/liblastfm/)
- [liblinear](http://www.csie.ntu.edu.tw/~cjlin/liblinear/)
- [liblo](http://liblo.sourceforge.net/)
- [liblockfile](http://packages.qa.debian.org/libl/liblockfile.html)
- [liblqr](http://liblqr.wikidot.com/)
- [libltc](http://x42.github.io/libltc/)
- [liblunar](http://code.google.com/p/liblunar/)
- [liblwgeom](http://postgis.net)
- [libmaa](http://www.dict.org/)
- [libmagic](http://www.darwinsys.com/file/)
- [libmatroska](http://www.matroska.org/)
- [libmaxminddb](https://github.com/maxmind/libmaxminddb)
- [libmemcached](http://libmemcached.org)
- [libmetalink](https://launchpad.net/libmetalink/)
- [libmicrohttpd](http://www.gnu.org/software/libmicrohttpd/)
- [libmikmod](http://mikmod.shlomifish.org)
- [libming](http://www.libming.org)
- [libmms](http://sourceforge.net/projects/libmms/)
- [libmodbus](http://libmodbus.org)
- [libmodplug](http://modplug-xmms.sourceforge.net/)
- [libmongoclient](http://www.mongodb.org)
- [libmonome](http://illest.net/libmonome/)
- [libmowgli](http://www.atheme.org/project/mowgli)
- [libmp3splt](http://mp3splt.sourceforge.net)
- [libmpc](http://multiprecision.org)
- [libmpd](http://gmpc.wikia.com/wiki/Gnome_Music_Player_Client)
- [libmpdclient](http://www.musicpd.org/libs/libmpdclient/)
- [libmpeg2](http://libmpeg2.sourceforge.net/)
- [libmrss](http://www.autistici.org/bakunin/libmrss/)
- [libmspub](https://wiki.documentfoundation.org/DLP/Libraries/libmspub)
- [libmtp](http://libmtp.sourceforge.net/)
- [libmusicbrainz](http://musicbrainz.org/doc/libmusicbrainz)
- [libmxml](http://www.minixml.org/)
- [libnatpmp](http://miniupnp.free.fr/libnatpmp.html)
- [libnet](https://github.com/sam-github/libnet)
- [libnfc](http://www.libnfc.org/)
- [libnice](http://nice.freedesktop.org/wiki/)
- [libnids](http://libnids.sourceforge.net/)
- [libntlm](http://www.nongnu.org/libntlm/)
- [libnxml](http://www.autistici.org/bakunin/libnxml/)
- [liboauth](http://liboauth.sourceforge.net)
- [libodbc++](http://libodbcxx.sourceforge.net)
- [libodfgen](http://sourceforge.net/p/libwpd/wiki/libodfgen/)
- [libofx](http://libofx.sourceforge.net)
- [libogg](https://www.xiph.org/ogg/)
- [liboil](http://liboil.freedesktop.org/)
- [libopendkim](http://opendkim.org)
- [libopennet](http://www.rkeene.org/oss/libopennet)
- [liboping](http://verplant.org/liboping/)
- [libopkele](http://kin.klever.net/libopkele/)
- [libosip](http://www.gnu.org/software/osip/)
- [libotr](http://www.cypherpunks.ca/otr/)
- [libowfat](http://www.fefe.de/libowfat/)
- [libp11](https://github.com/OpenSC/libp11/wiki)
- [libpano](http://panotools.sourceforge.net/)
- [libpcl](http://xmailserver.org/libpcl.html)
- [libpgm](http://code.google.com/p/openpgm/)
- [libplist](http://www.libimobiledevice.org)
- [libpng](http://www.libpng.org/pub/png/libpng.html)
- [libpoker-eval](http://pokersource.sourceforge.net)
- [libpqxx](http://pqxx.org/development/libpqxx/)
- [libpst](http://www.five-ten-sg.com/libpst/)
- [libpuzzle](http://libpuzzle.pureftpd.org/project/libpuzzle)
- [libqalculate](http://qalculate.sourceforge.net/)
- [libqglviewer](http://www.libqglviewer.com/)
- [libquicktime](http://libquicktime.sourceforge.net/)
- [libquvi](http://quvi.sourceforge.net/)
- [libqxt](http://libqxt.org/)
- [librasterlite](https://www.gaia-gis.it/fossil/librasterlite/index)
- [libraw](http://www.libraw.org/)
- [librcsc](http://sourceforge.jp/projects/rctools/)
- [libre](http://www.creytiv.com)
- [libreadline-java](http://java-readline.sourceforge.net/)
- [librem](http://www.creytiv.com)
- [libreplaygain](http://www.musepack.net/)
- [libresample](https://ccrma.stanford.edu/~jos/resample/Available_Software.html)
- [libressl](http://www.libressl.org/)
- [librets](http://code.crt.realtors.org/projects/librets)
- [librevenge](http://sourceforge.net/p/libwpd/wiki/librevenge/)
- [librsvg](https://live.gnome.org/LibRsvg)
- [librsync](http://librsync.sourceforge.net/)
- [librtlsdr](http://sdr.osmocom.org/trac/wiki/rtl-sdr)
- [libsamplerate](http://www.mega-nerd.com/SRC)
- [libsass](https://github.com/hcatlin/libsass)
- [libscrypt](https://lolware.net/libscrypt.html)
- [libsecret](https://wiki.gnome.org/Projects/Libsecret)
- [libshout](http://www.icecast.org/)
- [libsigc++](http://libsigc.sourceforge.net)
- [libsigsegv](http://www.gnu.org/software/libsigsegv/)
- [libslax](http://www.libslax.org/)
- [libsmf](http://sourceforge.net/projects/libsmf/)
- [libsmi](http://www.ibr.cs.tu-bs.de/projects/libsmi/)
- [libsndfile](http://www.mega-nerd.com/libsndfile/)
- [libsodium](https://github.com/jedisct1/libsodium/)
- [libsoup](http://live.gnome.org/LibSoup)
- [libspatialite](https://www.gaia-gis.it/fossil/libspatialite/index)
- [libspiro](https://github.com/fontforge/libspiro)
- [libssh](http://www.libssh.org/)
- [libssh2](http://www.libssh2.org/)
- [libstfl](http://www.clifford.at/stfl/)
- [libstrophe](http://strophe.im/libstrophe/)
- [libstxxl](http://stxxl.sourceforge.net/)
- [libsvg-cairo](http://cairographics.org/)
- [libsvg](http://cairographics.org/)
- [libsvm](http://www.csie.ntu.edu.tw/~cjlin/libsvm/)
- [libswiften](http://swift.im/swiften)
- [libtar](http://repo.or.cz/w/libtar.git)
- [libtasn1](https://www.gnu.org/software/libtasn1/)
- [libtecla](http://www.astro.caltech.edu/~mcs/tecla/index.html)
- [libtermkey](http://www.leonerd.org.uk/code/libtermkey/)
- [libtess2](https://code.google.com/p/libtess2/)
- [libtextcat](http://software.wise-guys.nl/libtextcat/)
- [libtiff](http://www.remotesensing.org/libtiff/)
- [libtins](https://libtins.github.io/)
- [libtomcrypt](http://libtom.org/?page=features&whatfile=crypt)
- [libtommath](http://libtom.org/?page=features&newsitems=5&whatfile=ltm)
- [libtool](http://www.gnu.org/software/libtool/)
- [libtorrent-rasterbar](http://www.rasterbar.com/products/libtorrent/)
- [libtorrent](http://libtorrent.rakshasa.no/)
- [libtrace](http://research.wand.net.nz/software/libtrace.php)
- [libunistring](https://www.gnu.org/software/libunistring/)
- [libunwind-headers](http://opensource.apple.com/)
- [libupnp](http://pupnp.sourceforge.net/)
- [libusb-compat](http://www.libusb.org/)
- [libusb](http://libusb.info)
- [libusrsctp](http://sctp.fh-muenster.de/sctp-user-land-stack.html)
- [libutf](http://swtch.com/plan9port/unix/)
- [libuv](https://github.com/joyent/libuv)
- [libuvc](https://github.com/ktossell/libuvc)
- [libvbucket](http://couchbase.com/develop/c/current)
- [libvidstab](http://public.hronopik.de/vid.stab/)
- [libvirt](http://www.libvirt.org)
- [libvisio](https://wiki.documentfoundation.org/DLP/Libraries/libvisio)
- [libvo-aacenc](http://opencore-amr.sourceforge.net/)
- [libvoikko](http://voikko.puimula.org/)
- [libvorbis](http://vorbis.com)
- [libvpx](http://www.webmproject.org/code/)
- [libwbxml](https://libwbxml.opensync.org/)
- [libwebsockets](http://libwebsockets.org)
- [libwmf](http://wvware.sourceforge.net/libwmf.html)
- [libwpd](http://libwpd.sourceforge.net/)
- [libwpg](http://libwpg.sourceforge.net/)
- [libwps](http://libwps.sourceforge.net)
- [libxc](http://www.tddft.org/programs/octopus/wiki/index.php/Libxc)
- [libxdiff](http://www.xmailserver.org/xdiff-lib.html)
- [libxmi](http://www.gnu.org/software/libxmi/)
- [libxml++](http://libxmlplusplus.sourceforge.net)
- [libxml2](http://xmlsoft.org)
- [libxmlsec1](http://www.aleksey.com/xmlsec/)
- [libxmp](http://xmp.sourceforge.net)
- [libxslt](http://xmlsoft.org/XSLT/)
- [libxspf](http://libspiff.sourceforge.net/)
- [libyaml](http://pyyaml.org/wiki/LibYAML)
- [libyubikey](http://yubico.github.io/yubico-c/)
- [libzdb](http://tildeslash.com/libzdb/)
- [libzip](http://www.nih.at/libzip/)
- [libzzip](http://sourceforge.net/projects/zziplib/)
- [lifelines](http://lifelines.sourceforge.net/)
- [lightning](http://www.gnu.org/software/lightning/)
- [lighttpd](http://www.lighttpd.net/)
- [lilv](http://drobilla.net/software/lilv/)
- [lilypond](http://lilypond.org/)
- [link-grammar](http://www.abisource.com/projects/link-grammar/)
- [linklint](http://linklint.org)
- [links](http://links.twibright.com/)
- [liquibase](http://liquibase.org)
- [liquidprompt](https://github.com/nojhan/liquidprompt)
- [litmus](http://www.webdav.org/neon/litmus/)
- [little-cms](http://www.littlecms.com/)
- [little-cms2](http://www.littlecms.com/)
- [lldpd](http://vincentbernat.github.io/lldpd/)
- [llvm](http://llvm.org/)
- [lmdb](http://symas.com/mdb/)
- [lnav](http://lnav.org)
- [lockrun](http://unixwiz.net/tools/lockrun.html)
- [log4c](http://log4c.sourceforge.net/)
- [log4cplus](http://log4cplus.sourceforge.net/)
- [log4cpp](http://log4cpp.sourceforge.net/)
- [log4cxx](http://logging.apache.org/log4cxx/index.html)
- [log4shib](https://wiki.shibboleth.net/confluence/display/OpenSAML/log4shib)
- [logcheck](http://logcheck.alioth.debian.org/)
- [logentries](https://logentries.com/doc/agent/)
- [logrotate](http://packages.debian.org/testing/admin/logrotate)
- [logstalgia](http://code.google.com/p/logstalgia/)
- [logstash](http://logstash.net/)
- [logtalk](http://logtalk.org)
- [lolcode](http://lolcode.org)
- [lorem](http://code.google.com/p/lorem/)
- [loudmouth](http://mcabber.com)
- [lout](http://savannah.nongnu.org/projects/lout)
- [lpc21isp](http://lpc21isp.sourceforge.net/)
- [lrdf](https://github.com/swh/LRDF)
- [lrzip](http://lrzip.kolivas.org)
- [lrzsz](http://www.ohse.de/uwe/software/lrzsz.html)
- [lsdvd](http://sourceforge.net/projects/lsdvd)
- [lsyncd](https://github.com/axkibe/lsyncd)
- [ltc-tools](https://github.com/x42/ltc-tools)
- [lua](http://www.lua.org/)
- [lua51](http://www.lua.org/)
- [luabind](http://www.rasterbar.com/products/luabind.html)
- [luajit](http://luajit.org/luajit.html)
- [luarocks](http://luarocks.org)
- [luciddb](http://www.luciddb.org/)
- [luvit](http://luvit.io)
- [lv](http://www.ff.iij4u.or.jp/~nrt/lv/)
- [lv2](http://lv2plug.in)
- [lwtools](http://lwtools.projects.l-w.ca/)
- [lxsplit](http://lxsplit.sourceforge.net/)
- [lynis](http://cisofy.com/lynis/)
- [lynx](http://lynx.isc.org/release/)
- [lysp](http://www.piumarta.com/software/lysp/)
- [lz4](http://code.google.com/p/lz4/)
- [lzip](http://www.nongnu.org/lzip/lzip.html)
- [lzlib](http://www.nongnu.org/lzip/lzlib.html)
- [lzo](http://www.oberhumer.com/opensource/lzo/)
- [lzop](http://www.lzop.org/)
#### M
- [maatkit](http://code.google.com/p/maatkit/)
- [mac-robber](http://www.sleuthkit.org/mac-robber/)
- [mackup](https://github.com/lra/mackup)
- [macvim](http://code.google.com/p/macvim/)
- [mad](http://www.underbit.com/products/mad/)
- [madplay](http://www.underbit.com/products/mad/)
- [magit](https://github.com/magit/magit)
- [mahout](http://mahout.apache.org/)
- [mailcheck](http://mailcheck.sourceforge.net/)
- [mailtomutt](http://mailtomutt.sourceforge.net)
- [mailutils](http://mailutils.org/)
- [mairix](http://www.rpcurnow.force9.co.uk/mairix/)
- [makedepend](http://x.org)
- [makeicns](http://bitbucket.org/mkae/makeicns)
- [makensis](http://nsis.sourceforge.net/)
- [makepkg](https://wiki.archlinux.org/index.php/makepkg)
- [makepp](http://makepp.sourceforge.net/)
- [makeself](http://www.megastep.org/makeself/)
- [mal4s](https://github.com/secure411dotorg/mal4s/)
- [malaga](http://home.arcor.de/bjoern-beutel/malaga/)
- [malbolge](http://esoteric.sange.fi/orphaned/malbolge/README.txt)
- [man2html](http://www.oac.uci.edu/indiv/ehood/man2html.html)
- [mapnik](http://www.mapnik.org/)
- [mapserver](http://mapserver.org/)
- [mariadb](http://mariadb.org/)
- [markdown](http://daringfireball.net/projects/markdown/)
- [marst](http://www.gnu.org/software/marst)
- [masscan](https://github.com/robertdavidgraham/masscan/)
- [mat](https://mat.boum.org/)
- [matlab2tikz](https://github.com/nschloe/matlab2tikz)
- [maven-shell](http://shell.sonatype.org/)
- [maven](http://maven.apache.org/)
- [mawk](http://invisible-island.net/mawk/mawk.html)
- [mbelib](https://github.com/szechyjs/mbelib)
- [mboxgrep](http://www.mboxgrep.org)
- [mcabber](http://mcabber.com/)
- [mcpp](http://mcpp.sourceforge.net/)
- [mcrypt](http://mcrypt.sourceforge.net)
- [md](http://opensource.apple.com/source/adv_cmds/adv_cmds-147/md/)
- [md5deep](https://github.com/jessek/hashdeep)
- [md5sha1sum](http://www.microbrew.org/tools/md5sha1sum/)
- [mda-lv2](http://drobilla.net/software/mda-lv2/)
- [mdbtools](https://github.com/brianb/mdbtools/)
- [mdf2iso](http://mdf2iso.berlios.de/)
- [mdr](https://github.com/halffullheart/mdr)
- [mdxmini](http://clogging.web.fc2.com/psp/)
- [mecab-ipadic](http://mecab.googlecode.com/svn/trunk/mecab/doc/index.html)
- [mecab-jumandic](http://mecab.googlecode.com/svn/trunk/mecab/doc/index.html)
- [mecab-ko-dic](https://bitbucket.org/eunjeon/mecab-ko-dic)
- [mecab-ko](https://bitbucket.org/eunjeon/mecab-ko)
- [mecab-unidic](http://sourceforge.jp/projects/unidic/)
- [mecab](http://mecab.sourceforge.net/)
- [media-info](https://mediaarea.net/)
- [mediatomb](http://mediatomb.cc)
- [megacmd](https://github.com/t3rm1n4l/megacmd)
- [meld](http://meldmerge.org)
- [memcache-top](http://code.google.com/p/memcache-top/)
- [memcached](http://memcached.org/)
- [memcachedb](http://memcachedb.org)
- [memcacheq](http://memcachedb.org/memcacheq)
- [memtester](http://pyropus.ca/software/memtester/)
- [menhir](http://cristal.inria.fr/~fpottier/menhir)
- [mercurial](http://mercurial.selenic.com/)
- [mercury](http://mercurylang.org/)
- [mergelog](http://mergelog.sourceforge.net/)
- [mesalib-glw](http://www.mesa3d.org)
- [mesos](http://mesos.apache.org)
- [mess](http://www.mess.org/)
- [metalua](http://metalua.luaforge.net/)
- [metapixel](http://www.complang.tuwien.ac.at/schani/metapixel/)
- [metaproxy](http://www.indexdata.com/metaproxy)
- [mfcuk](http://code.google.com/p/mfcuk/)
- [mfoc](http://code.google.com/p/mfoc/)
- [mftrace](http://lilypond.org/mftrace/)
- [mg](http://homepage.boetes.org/software/mg/)
- [mhash](http://mhash.sourceforge.net/)
- [midgard2](http://www.midgard-project.org/)
- [midicsv](http://www.fourmilab.ch/webtools/midicsv)
- [midnight-commander](http://www.midnight-commander.org/)
- [mighttpd2](http://mew.org/~kazu/proj/mighttpd/en/)
- [mikmod](http://mikmod.raphnet.net/)
- [mimms](http://savannah.nongnu.org/projects/mimms)
- [minbif](http://minbif.im/)
- [minicom](http://alioth.debian.org/projects/minicom/)
- [minidjvu](http://minidjvu.sourceforge.net/)
- [minidlna](http://sourceforge.net/projects/minidlna/)
- [minimodem](http://www.whence.com/minimodem/)
- [minisat](http://minisat.se)
- [minised](http://www.exactcode.de/site/open_source/minised/)
- [miniupnpc](http://miniupnp.tuxfamily.org)
- [minizinc](http://www.minizinc.org)
- [minizip](http://www.winimage.com/zLibDll/minizip.html)
- [minuit2](http://lcgapp.cern.ch/project/cls/work-packages/mathlibs/minuit/index.html)
- [miredo](http://www.remlab.net/miredo/)
- [mit-scheme](http://www.gnu.org/software/mit-scheme/)
- [mitmproxy](http://mitmproxy.org)
- [mjpegtools](http://mjpeg.sourceforge.net/)
- [mkclean](http://www.matroska.org/downloads/mkclean.html)
- [mkcue](http://packages.debian.org/source/stable/mkcue)
- [mksh](https://mirbsd.org/mksh.htm)
- [mktorrent](http://mktorrent.sourceforge.net/)
- [mkvalidator](http://www.matroska.org/downloads/mkvalidator.html)
- [mkvdts2ac3](https://github.com/JakeWharton/mkvdts2ac3)
- [mkvtomp4](https://github.com/gavinbeatty/mkvtomp4/)
- [mkvtoolnix](https://www.bunkus.org/videotools/mkvtoolnix/)
- [mldonkey](http://mldonkey.sourceforge.net/Main_Page)
- [mlkit](http://sourceforge.net/apps/mediawiki/mlkit)
- [mlt](http://www.mltframework.org/)
- [mlton](http://mlton.org)
- [mm-common](http://www.gtkmm.org)
- [mmix](http://mmix.cs.hm.edu/)
- [mmsrip](http://nbenoit.tuxfamily.org/index.php?page=MMSRIP)
- [mmv](http://packages.debian.org/unstable/utils/mmv)
- [mobile-shell](http://mosh.mit.edu/)
- [moc](http://moc.daper.net)
- [modman](https://github.com/colinmollenhour/modman)
- [modules](http://modules.sourceforge.net/)
- [mogenerator](http://rentzsch.github.io/mogenerator/)
- [mon](https://github.com/visionmedia/mon)
- [monetdb](https://www.monetdb.org/)
- [mongo-c](http://docs.mongodb.org/ecosystem/drivers/c/)
- [mongodb](http://www.mongodb.org/)
- [mongoose](https://github.com/valenok/mongoose)
- [mongrel2](http://mongrel2.org/)
- [mongroup](https://github.com/jgallen23/mongroup)
- [monit](http://mmonit.com/monit/)
- [monkeysphere](http://web.monkeysphere.info/)
- [mono](http://www.mono-project.com/)
- [monotone](http://monotone.ca/)
- [montage](http://montage.ipac.caltech.edu)
- [moreutils](http://packages.debian.org/unstable/utils/moreutils)
- [morse](http://www.catb.org/~esr/morse/)
- [mosquitto](http://mosquitto.org/)
- [most](http://www.jedsoft.org/most/)
- [movgrab](https://sites.google.com/site/columscode/home/movgrab)
- [mozilla-addon-sdk](https://developer.mozilla.org/en-US/Add-ons/SDK)
- [mozjpeg](https://github.com/mozilla/mozjpeg)
- [mp3blaster](http://mp3blaster.sourceforge.net)
- [mp3cat](http://tomclegg.net/mp3cat)
- [mp3check](http://code.google.com/p/mp3check/)
- [mp3fs](http://khenriks.github.io/mp3fs/)
- [mp3gain](http://mp3gain.sourceforge.net)
- [mp3info](http://www.ibiblio.org/mp3info/)
- [mp3splt](http://mp3splt.sourceforge.net)
- [mp3val](http://mp3val.sourceforge.net/)
- [mp3wrap](http://mp3wrap.sourceforge.net/)
- [mp4v2](http://code.google.com/p/mp4v2/)
- [mpack](http://ftp.andrew.cmu.edu/pub/mpack/)
- [mpc](http://www.musicpd.org/clients/mpc/)
- [mpck](http://checkmate.gissen.nl/)
- [mpd](http://www.musicpd.org/)
- [mpdas](http://www.50hz.ws/mpdas/)
- [mpdscribble](http://mpd.wikia.com/wiki/Client:Mpdscribble)
- [mpdviz](https://github.com/lucy/mpdviz)
- [mpegdemux](http://www.hampa.ch/mpegdemux/)
- [mpfi](http://perso.ens-lyon.fr/nathalie.revol/software.html)
- [mpfr](http://www.mpfr.org/)
- [mpg123](http://www.mpg123.de/)
- [mpg321](http://mpg321.sourceforge.net/)
- [mpgtx](http://mpgtx.sourceforge.net)
- [mpich2](http://www.mpich.org/)
- [mpio](https://github.com/frsyuki/mpio)
- [mplayer](http://www.mplayerhq.hu/)
- [mplayershell](https://github.com/donmelton/MPlayerShell)
- [mpop](http://mpop.sourceforge.net/)
- [mpssh](https://github.com/ndenev/mpssh)
- [mr](http://myrepos.branchable.com/)
- [mrtg](http://oss.oetiker.ch/mrtg/)
- [mruby](http://www.mruby.org)
- [mscgen](http://www.mcternan.me.uk/mscgen/)
- [msdl](http://msdl.sourceforge.net)
- [msgpack-rpc](https://github.com/msgpack/msgpack-rpc)
- [msgpack](http://msgpack.org/)
- [msitools](https://wiki.gnome.org/msitools)
- [msktutil](https://code.google.com/p/msktutil/)
- [msmtp](http://msmtp.sourceforge.net)
- [mspdebug](http://mspdebug.sourceforge.net/)
- [mtools](http://www.gnu.org/software/mtools/)
- [mtr](http://www.bitwizard.nl/mtr/)
- [mu](http://www.djcbsoftware.nl/code/mu/)
- [multimarkdown](http://fletcherpenney.net/multimarkdown/)
- [multitail](http://www.vanheusden.com/multitail/download.html)
- [muparser](http://muparser.beltoforion.de/)
- [mupdf](http://mupdf.com)
- [musepack](http://www.musepack.net/)
- [mussh](http://mussh.sourceforge.net/)
- [mutt](http://www.mutt.org/)
- [mydumper](https://launchpad.net/mydumper)
- [mysql++](http://tangentsoft.net/mysql++/)
- [mysql-cluster](http://www.mysql.com/cluster/)
- [mysql-connector-c++](http://dev.mysql.com/downloads/connector/cpp/)
- [mysql-connector-c](http://dev.mysql.com/downloads/connector/c/)
- [mysql-connector-odbc](http://dev.mysql.com/doc/refman/5.1/en/connector-odbc.html)
- [mysql-proxy](http://dev.mysql.com/doc/refman/5.6/en/mysql-proxy.html)
- [mysql-search-replace](https://interconnectit.com/products/search-and-replace-for-wordpress-databases/)
- [mysql](http://dev.mysql.com/doc/refman/5.6/en/)
- [mysqlreport](http://hackmysql.com/mysqlreport)
- [mytop](http://jeremy.zawodny.com/mysql/mytop/)
#### N
- [n](https://github.com/visionmedia/n)
- [nacl](http://nacl.cace-project.eu)
- [nagios-plugins](https://www.nagios-plugins.org/)
- [nagios](http://www.nagios.org/)
- [namazu](http://www.namazu.org/)
- [namebench](https://code.google.com/p/namebench/)
- [nanomsg](http://nanomsg.org)
- [nanopb-generator](http://koti.kapsi.fi/jpa/nanopb/docs/index.html)
- [nant](http://nant.sourceforge.net/)
- [narwhal](https://github.com/280north/narwhal)
- [nasm](http://www.nasm.us/)
- [naturaldocs](http://www.naturaldocs.org/)
- [nbimg](https://github.com/poliva/nbimg)
- [ncdc](http://dev.yorhel.nl/ncdc)
- [ncdu](http://dev.yorhel.nl/ncdu)
- [ncftp](http://www.ncftp.com)
- [ncmpc](http://mpd.wikia.com/wiki/Client:Ncmpc)
- [ncmpcpp](http://ncmpcpp.rybczak.net/)
- [ncp](http://www.fefe.de/ncp/)
- [ncrack](http://nmap.org/ncrack/)
- [ndiff](http://www.math.utah.edu/~beebe/software/ndiff/)
- [ndpi](http://www.ntop.org/products/ndpi/)
- [neko](http://nekovm.org)
- [neo4j](http://neo4j.org)
- [neon](http://www.webdav.org/neon/)
- [nesc](http://nescc.sourceforge.net/)
- [net-snmp](http://www.net-snmp.org/)
- [net6](http://gobby.0x539.de)
- [netcat](http://netcat.sourceforge.net/)
- [netcat6](http://www.deepspace6.net/projects/netcat6.html)
- [netpbm](http://netpbm.sourceforge.net)
- [netperf](http://netperf.org)
- [nettle](http://www.lysator.liu.se/~nisse/nettle/)
- [newick-utils](http://cegg.unige.ch/newick_utils)
- [newlisp](http://www.newlisp.org/)
- [newsbeuter](http://newsbeuter.org/)
- [newt](https://fedorahosted.org/newt/)
- [nexus](http://www.sonatype.org/)
- [nfcutils](https://code.google.com/p/nfc-tools/)
- [nginx](http://nginx.org/)
- [ngircd](http://ngircd.barton.de)
- [ngrep](http://ngrep.sourceforge.net/)
- [ngrok](https://ngrok.com)
- [ngspice](http://ngspice.sourceforge.net/)
- [nickle](http://www.nickle.org/)
- [nicovideo-dl](http://sourceforge.jp/projects/nicovideo-dl/)
- [nimrod](http://nimrod-code.org/)
- [ninja-ide](http://ninja-ide.org/)
- [ninja](https://martine.github.io/ninja/)
- [nkf](http://sourceforge.jp/projects/nkf/)
- [nload](http://www.roland-riegel.de/nload/)
- [nmap](http://nmap.org/)
- [node](http://nodejs.org/)
- [nodebrew](https://github.com/hokaccha/nodebrew)
- [nodenv](https://github.com/wfarr/nodenv)
- [nordugrid-arc](http://www.nordugrid.org)
- [normalize](http://normalize.nongnu.org/)
- [notmuch](http://notmuchmail.org)
- [noweb](http://www.cs.tufts.edu/~nr/noweb/)
- [npth](http://lwn.net/Articles/496268/)
- [nrg2iso](http://gregory.kokanosky.free.fr/v4/linux/nrg2iso.en.html)
- [nrpe](http://www.nagios.org/)
- [nsd](http://www.nlnetlabs.nl/projects/nsd/)
- [nspr](https://developer.mozilla.org/docs/Mozilla/Projects/NSPR)
- [nsq](http://bitly.github.io/nsq)
- [nss](https://developer.mozilla.org/docs/NSS)
- [ntfs-3g](http://www.tuxera.com/community/ntfs-3g-download/)
- [ntl](http://www.shoup.net/ntl)
- [ntopng](http://www.ntop.org/products/ntop/)
- [nu](http://programming.nu)
- [num-utils](http://suso.suso.org/programs/num-utils/)
- [nutcracker](https://github.com/twitter/twemproxy)
- [nuttcp](http://www.nuttcp.net/nuttcp)
- [nvi](https://sites.google.com/a/bostic.com/keithbostic/vi/)
- [nvm](https://github.com/creationix/nvm)
- [nylon](http://monkey.org/~marius/pages/?page=nylon)
- [nzbget](http://nzbget.net/)
#### O
- [o-make](http://omake.metaprl.org/)
- [oath-toolkit](http://www.nongnu.org/oath-toolkit/)
- [objc-codegenutils](https://github.com/square/objc-codegenutils)
- [objc-run](https://github.com/iljaiwas/objc-run)
- [objective-caml](http://ocaml.org)
- [ocamlsdl](http://ocamlsdl.sourceforge.net/)
- [ocp](http://sourceforge.net/p/opencubicplayer/home/)
- [ocrad](http://www.gnu.org/software/ocrad/)
- [ode](http://www.ode.org/)
- [offline-imap](http://offlineimap.org/)
- [oggz](http://www.xiph.org/oggz/)
- [ogmtools](http://www.bunkus.org/videotools/ogmtools/)
- [ohcount](https://github.com/blackducksw/ohcount)
- [ola](http://www.openlighting.org/ola/)
- [olsrd](http://www.olsr.org)
- [omega](http://xapian.org)
- [omniorb](http://omniorb.sourceforge.net/)
- [ondir](http://swapoff.org/ondir.html)
- [onepass](https://github.com/georgebrock/1pass)
- [onetime](http://red-bean.com/onetime/)
- [oniguruma](http://www.geocities.jp/kosako3/oniguruma/)
- [opam](https://opam.ocaml.org)
- [open-babel](http://www.openbabel.org)
- [open-cobol](http://www.opencobol.org/)
- [open-mesh](http://openmesh.org)
- [open-mpi](http://www.open-mpi.org/)
- [open-ocd](http://sourceforge.net/projects/openocd/)
- [open-scene-graph](http://www.openscenegraph.org/projects/osg)
- [open-sp](http://openjade.sourceforge.net)
- [open-vcdiff](http://code.google.com/p/open-vcdiff/)
- [openal-soft](http://kcat.strangesoft.net/openal.html)
- [opencbm](http://www.trikaliotis.net/opencbm-alpha)
- [opencc](https://github.com/BYVoid/OpenCC)
- [opencolorio](http://opencolorio.org/)
- [openconnect](http://www.infradead.org/openconnect.html)
- [opencore-amr](http://opencore-amr.sourceforge.net/)
- [opendetex](https://code.google.com/p/opendetex/)
- [openexr](http://www.openexr.com/)
- [openjpeg](http://www.openjpeg.org/)
- [openlitespeed](http://open.litespeedtech.com/mediawiki/)
- [openrtsp](http://www.live555.com/openRTSP)
- [opensaml](https://wiki.shibboleth.net/confluence/display/OpenSAML/Home)
- [opensc](https://github.com/OpenSC/OpenSC/wiki)
- [openslide](http://openslide.org/)
- [openslp](http://www.openslp.org)
- [openssl](http://openssl.org)
- [openvpn](https://openvpn.net/index.php/download/community-downloads.html)
- [ophcrack](http://ophcrack.sourceforge.net/)
- [optipng](http://optipng.sourceforge.net/)
- [opus-tools](http://www.opus-codec.org)
- [opus](http://www.opus-codec.org)
- [opusfile](http://www.opus-codec.org/)
- [orbit](http://projects.gnome.org/ORBit2/)
- [orc](http://cgit.freedesktop.org/gstreamer/orc/)
- [orfeo](http://www.orfeo-toolbox.org/otb/)
- [ori](http://ori.scs.stanford.edu/)
- [orientdb](http://www.orientdb.org/index.htm)
- [orpie](http://pessimization.com/software/orpie/)
- [ortp](http://www.linphone.org/eng/documentation/dev/ortp.html)
- [oscats](http://code.google.com/p/oscats/)
- [osh](http://v6shell.org)
- [osm-pbf](http://wiki.openstreetmap.org/wiki/PBF_Format)
- [osm2pgrouting](http://pgrouting.org/docs/tools/osm2pgrouting.html)
- [osm2pgsql](http://wiki.openstreetmap.org/wiki/Osm2pgsql)
- [osmosis](http://wiki.openstreetmap.org/wiki/Osmosis)
- [osslsigncode](http://sourceforge.net/projects/osslsigncode/)
- [ossp-uuid](http://www.ossp.org/pkg/lib/uuid/)
- [osxfuse](http://osxfuse.github.io)
- [osxutils](https://github.com/vasi/osxutils)
- [owamp](http://www.internet2.edu/performance/owamp/)
- [owfs](http://owfs.org/)
- [oxygen-icons](http://www.oxygen-icons.org/)
#### P
- [p0f](http://lcamtuf.coredump.cx/p0f3/)
- [p11-kit](http://p11-glue.freedesktop.org)
- [p7zip](http://p7zip.sourceforge.net/)
- [pakchois](http://www.manyfish.co.uk/pakchois/)
- [pam_yubico](http://opensource.yubico.com/yubico-pam/)
- [pan](http://pan.rebelbase.com/)
- [pandoc-citeproc](https://github.com/jgm/pandoc-citeproc)
- [pandoc](http://johnmacfarlane.net/pandoc/)
- [pango](http://www.pango.org/)
- [pangomm](http://www.pango.org/)
- [pangox-compat](http://pango.org)
- [paperkey](http://www.jabberwocky.com/software/paperkey/)
- [paps](http://paps.sourceforge.net/)
- [paq8px](http://dhost.info/paq8/)
- [par](http://www.nicemice.net/par/)
- [par2](http://parchive.sourceforge.net/)
- [par2tbb](http://chuchusoft.com/par2_tbb/)
- [parallel](http://savannah.gnu.org/projects/parallel/)
- [pari](http://pari.math.u-bordeaux.fr/)
- [parrot](http://www.parrot.org/)
- [partio](http://www.partio.us)
- [pass](http://www.passwordstore.org/)
- [passenger](https://www.phusionpassenger.com/)
- [pastebinit](https://launchpad.net/pastebinit)
- [patchutils](http://cyberelk.net/tim/software/patchutils/)
- [pathfinder](http://db.inf.uni-tuebingen.de/research/pathfinder)
- [pax-construct](http://wiki.ops4j.org/display/paxconstruct/Pax+Construct)
- [pax-runner](http://team.ops4j.org)
- [pazpar2](http://www.indexdata.com/pazpar2)
- [pbc-sig](http://crypto.stanford.edu/pbc/sig/)
- [pbc](http://crypto.stanford.edu/pbc/)
- [pbrt](http://pbrt.org/)
- [pbzip2](http://compression.ca/pbzip2/)
- [pcal](http://pcal.sourceforge.net/)
- [pcb](http://pcb.geda-project.org/)
- [pce](http://www.hampa.ch/pce/)
- [pcre++](http://www.daemon.de/PCRE)
- [pcre](http://www.pcre.org/)
- [pdal](http://pointcloud.org)
- [pdf-tools](https://github.com/axot/pdf-tools)
- [pdf2htmlex](https://coolwanglu.github.io/pdf2htmlEX/)
- [pdf2image](http://code.google.com/p/pdf2image/)
- [pdf2json](http://code.google.com/p/pdf2json/)
- [pdf2svg](http://www.cityinthesky.co.uk/opensource/pdf2svg)
- [pdfcrack](http://pdfcrack.sourceforge.net/)
- [pdfgrep](http://pdfgrep.sourceforge.net/)
- [pdfjam](http://www2.warwick.ac.uk/fac/sci/statistics/staff/academic-research/firth/software/pdfjam)
- [pdflib-lite](http://www.pdflib.com/download/free-software/pdflib-lite/)
- [pdftohtml](http://pdftohtml.sourceforge.net/)
- [pdftoipe](http://ipe7.sourceforge.net/)
- [pdksh](http://www.cs.mun.ca/~michael/pdksh/)
- [pdns](http://www.powerdns.com)
- [pdnsd](http://members.home.nl/p.a.rombouts/pdnsd/)
- [pdnsrec](http://wiki.powerdns.com)
- [pdsh](https://code.google.com/p/pdsh/)
- [pebble-sdk](https://developer.getpebble.com/2/)
- [peervpn](http://www.peervpn.net)
- [peg-markdown](https://github.com/jgm/peg-markdown)
- [peg](http://piumarta.com/software/peg/)
- [perceptualdiff](http://pdiff.sourceforge.net/)
- [percona-server](http://www.percona.com)
- [percona-toolkit](http://www.percona.com/software/percona-toolkit/)
- [perl-build](https://github.com/tokuhirom/Perl-Build)
- [perlmagick](http://www.imagemagick.org/script/perl-magick.php)
- [pev](http://pev.sf.net/)
- [pex](https://github.com/petere/pex)
- [pg_top](http://ptop.projects.postgresql.org/)
- [pgbadger](http://dalibo.github.io/pgbadger/)
- [pgbouncer](http://wiki.postgresql.org/wiki/PgBouncer)
- [pgdbf](https://github.com/kstrauser/pgdbf)
- [pgformatter](http://sqlformat.darold.net/)
- [pgpdump](http://www.mew.org/~kazu/proj/pgpdump/en/)
- [pgplot](http://www.astro.caltech.edu/~tjp/pgplot/)
- [pgpool-ii](http://www.pgpool.net/mediawiki/index.php/Main_Page)
- [pgrouting](http://www.pgrouting.org)
- [pgtap](http://pgtap.org/)
- [pgtune](http://pgfoundry.org/projects/pgtune)
- [phantomjs](http://www.phantomjs.org/)
- [phash](http://www.phash.org/)
- [phoon](http://www.acme.com/software/phoon/)
- [phoronix-test-suite](http://www.phoronix-test-suite.com/)
- [physfs](http://icculus.org/physfs/)
- [pianobar](https://github.com/PromyLOPh/pianobar/)
- [pianod](http://deviousfish.com/pianod/)
- [picoc](http://code.google.com/p/picoc/)
- [picocom](http://code.google.com/p/picocom/)
- [picolisp](http://picolisp.com/wiki/?home)
- [pidcat](https://github.com/JakeWharton/pidcat)
- [pidgin](http://pidgin.im/)
- [pidof](http://www.nightproductions.net/cli.htm)
- [pig](http://pig.apache.org/)
- [pigz](http://www.zlib.net/pigz/)
- [pike](http://pike.lysator.liu.se)
- [pincaster](https://github.com/jedisct1/Pincaster)
- [pinentry](http://www.gnupg.org/related_software/pinentry/index.en.html)
- [pipebench](http://www.habets.pp.se/synscan/programs.php?prog=pipebench)
- [pipemeter](https://launchpad.net/pipemeter)
- [pit](https://github.com/michaeldv/pit)
- [pius](http://www.phildev.net/pius/)
- [pixie](http://www.renderpixie.com/)
- [pixman](http://cairographics.org/)
- [pixz](https://github.com/vasi/pixz)
- [pjsip](http://www.pjsip.org)
- [pk](https://github.com/johnmorrow/pk)
- [pkcs11-helper](https://github.com/OpenSC/OpenSC/wiki/pkcs11-helper)
- [pkg-config](http://pkgconfig.freedesktop.org)
- [pktanon](http://www.tm.uka.de/software/pktanon/index.html)
- [plan9port](http://swtch.com/plan9port/)
- [plantuml](http://plantuml.sourceforge.net/)
- [platypus](http://sveinbjorn.org/platypus)
- [plenv](https://github.com/tokuhirom/plenv)
- [plod](http://www.deer-run.com/~hal/)
- [plotutils](http://www.gnu.org/software/plotutils/)
- [plowshare](http://code.google.com/p/plowshare/)
- [plplot](http://plplot.sourceforge.net)
- [plt-racket](http://racket-lang.org/)
- [plustache](https://github.com/mrtazz/plustache)
- [plzip](http://www.nongnu.org/lzip/plzip.html)
- [pmccabe](http://packages.debian.org/stable/pmccabe)
- [pmd](http://pmd.sourceforge.net/)
- [pmdmini](https://github.com/BouKiCHi/mdxplayer)
- [pms](http://pms.sourceforge.net)
- [png++](http://www.nongnu.org/pngpp/)
- [png2ico](http://www.winterdrache.de/freeware/png2ico/)
- [pngcheck](http://www.libpng.org/pub/png/apps/pngcheck.html)
- [pngcrush](http://pmt.sourceforge.net/pngcrush/)
- [pngnq](http://pngnq.sourceforge.net/)
- [pngpaste](https://github.com/jcsalterego/pngpaste)
- [pngquant](http://pngquant.org/)
- [pngwriter](http://pngwriter.sourceforge.net/)
- [poco](http://pocoproject.org/)
- [podiff](http://puszcza.gnu.org.ua/software/podiff/)
- [podofo](http://podofo.sourceforge.net)
- [points2grid](https://github.com/CRREL/points2grid)
- [polarssl](https://polarssl.org/)
- [polipo](http://www.pps.jussieu.fr/~jch/software/polipo/)
- [polygen](http://www.polygen.org)
- [polyml](http://www.polyml.org)
- [ponysay](http://erkin.co/ponysay/)
- [poppler](http://poppler.freedesktop.org)
- [popt](http://rpm5.org)
- [portaudio](http://www.portaudio.com)
- [portmidi](http://sourceforge.net/apps/trac/portmedia/wiki/portmidi)
- [poster](http://schrfr.github.io/poster/)
- [postgis](http://postgis.net)
- [postgres-xc](http://postgres-xc.sourceforge.net/)
- [postgresql](http://www.postgresql.org/)
- [postmark](http://packages.debian.org/stable/utils/postmark)
- [potrace](http://potrace.sourceforge.net)
- [pound](http://www.apsis.ch/pound)
- [povray](http://www.povray.org/)
- [pow](http://pow.cx/)
- [pplatex](http://www.stefant.org/web/projects/software/pplatex.html)
- [ppss](http://ppss.googlecode.com)
- [predictionio](http://prediction.io/)
- [premake](http://industriousone.com/premake)
- [primesieve](http://primesieve.org/)
- [prips](http://devel.ringlet.net/sysutils/prips/)
- [privoxy](http://www.privoxy.org)
- [probatron4j](http://www.probatron.org)
- [proctools](http://proctools.sourceforge.net/)
- [profanity](http://www.profanity.im/)
- [proftpd](http://www.proftpd.org/)
- [proguard](http://proguard.sourceforge.net/)
- [proj](http://trac.osgeo.org/proj/)
- [proof-general](http://proofgeneral.inf.ed.ac.uk)
- [prooftree](http://askra.de/software/prooftree)
- [protobuf-c](https://github.com/protobuf-c/protobuf-c)
- [protobuf](http://code.google.com/p/protobuf/)
- [proxychains-ng](https://sourceforge.net/projects/proxychains-ng)
- [proxytunnel](http://proxytunnel.sourceforge.net/)
- [ps2eps](http://www.tm.uka.de/~bless/ps2eps)
- [psftools](http://www.seasip.demon.co.uk/Unix/PSF/)
- [psgrep](http://code.google.com/p/psgrep/)
- [psqlodbc](http://www.postgresql.org/)
- [pssh](https://code.google.com/p/parallel-ssh/)
- [pstoedit](http://www.pstoedit.net)
- [pstree](http://freshmeat.net/projects/pstree/)
- [psutils](http://knackered.org/angus/psutils/)
- [ptex](http://ptex.us)
- [pth](http://www.gnu.org/software/pth/)
- [ptunnel](http://www.cs.uit.no/~daniels/PingTunnel/)
- [puf](http://puf.sourceforge.net/)
- [pulledpork](http://code.google.com/p/pulledpork/)
- [pulseaudio](http://pulseaudio.org)
- [pure-ftpd](http://www.pureftpd.org/)
- [pure](http://purelang.bitbucket.org/)
- [putmail-queue](http://putmail.sourceforge.net/home.html)
- [putmail](http://putmail.sourceforge.net/home.html)
- [putty](http://www.chiark.greenend.org.uk/~sgtatham/putty/)
- [pv](http://www.ivarch.com/programs/pv.shtml)
- [pwgen](http://pwgen.sourceforge.net/)
- [pwnat](http://samy.pl/pwnat/)
- [pwsafe](http://nsd.dyndns.org/pwsafe/)
- [pxz](http://jnovy.fedorapeople.org/pxz/)
- [py2cairo](http://cairographics.org/pycairo/)
- [py3cairo](http://cairographics.org/pycairo/)
- [pyenv-ccache](https://github.com/yyuu/pyenv-ccache)
- [pyenv-pip-rehash](https://github.com/yyuu/pyenv-pip-rehash)
- [pyenv-virtualenv](https://github.com/yyuu/pyenv-virtualenv)
- [pyenv-virtualenvwrapper](https://github.com/yyuu/pyenv-virtualenvwrapper)
- [pyenv-which-ext](https://github.com/yyuu/pyenv-which-ext)
- [pyenv](https://github.com/yyuu/pyenv)
- [pyexiv2](http://tilloy.net/dev/pyexiv2/)
- [pygobject](http://live.gnome.org/PyGObject)
- [pygobject3](http://live.gnome.org/PyGObject)
- [pygtk](http://www.pygtk.org/)
- [pygtkglext](http://projects.gnome.org/gtkglext/download.html#pygtkglext)
- [pygtksourceview](http://projects.gnome.org/gtksourceview/pygtksourceview.html)
- [pylucene](http://lucene.apache.org/pylucene/index.html)
- [pypy](http://pypy.org/)
- [pypy3](http://pypy.org/)
- [pyqt](http://www.riverbankcomputing.co.uk/software/pyqt)
- [pyqt5](http://www.riverbankcomputing.co.uk/software/pyqt/download5)
- [pyqwt](http://pyqwt.sourceforge.net)
- [pyside-tools](http://www.pyside.org)
- [pyside](http://www.pyside.org)
- [python](http://www.python.org)
- [python3](https://www.python.org/)
- [pyxplot](http://pyxplot.org.uk/)
#### Q
- [q](https://github.com/harelba/q)
- [qbs](http://qt-project.org/wiki/qbs)
- [qca](http://delta.affinix.com/qca/)
- [qcachegrind](http://kcachegrind.sourceforge.net/html/Home.html)
- [qd](http://crd.lbl.gov/~dhbailey/mpdist/)
- [qdbm](http://fallabs.com/qdbm)
- [qemu](http://www.qemu.org/)
- [qfits](http://www.eso.org/sci/software/eclipse/qfits/index.html)
- [qi](http://www.lambdassociates.org/)
- [qimageblitz](http://www.kde.org)
- [qiv](http://spiegl.de/qiv/)
- [qjson](http://qjson.sourceforge.net)
- [qpdf](http://qpdf.sourceforge.net/)
- [qprint](http://www.fourmilab.ch/webtools/qprint)
- [qrencode](http://fukuchi.org/works/qrencode/index.html.en)
- [qscintilla2](http://www.riverbankcomputing.co.uk/software/qscintilla/intro)
- [qstat](http://qstat.sourceforge.net)
- [qt](http://qt-project.org/)
- [qt5](http://qt-project.org/)
- [qtfaststart](http://libav.org/)
- [qtplay](https://sites.google.com/site/rainbowflight2/)
- [quantlib](http://quantlib.org/)
- [quassel](http://www.quassel-irc.org/)
- [quazip](http://quazip.sourceforge.net/)
- [quex](http://quex.org/)
- [quilt](http://savannah.nongnu.org/projects/quilt)
- [quotatool](http://quotatool.ekenberg.se)
- [quvi](http://quvi.sourceforge.net/)
- [qwt](http://qwt.sourceforge.net/)
- [qwtpolar](http://qwtpolar.sourceforge.net/)
- [qxmpp](https://github.com/qxmpp-project/qxmpp/)
#### R
- [r3](https://github.com/c9s/r3)
- [rabbitmq-c](https://github.com/alanxz/rabbitmq-c)
- [rabbitmq](http://www.rabbitmq.com)
- [radamsa](https://code.google.com/p/ouspg/wiki/Radamsa)
- [radare2](http://radare.org)
- [ragel](http://www.complang.org/ragel/)
- [rainbarf](https://github.com/creaktive/rainbarf)
- [rakudo-star](http://rakudo.org/)
- [rancid](http://www.shrubbery.net/rancid/)
- [randomize-lines](http://arthurdejong.org/rl/)
- [ranger](http://ranger.nongnu.org/)
- [raptor](http://librdf.org/raptor/)
- [rarian](http://rarian.freedesktop.org/)
- [rasqal](http://librdf.org/rasqal/)
- [rats](https://security.web.cern.ch/security/recommendations/en/codetools/rats.shtml)
- [rbenv-aliases](https://github.com/tpope/rbenv-aliases)
- [rbenv-binstubs](https://github.com/ianheggie/rbenv-binstubs)
- [rbenv-bundler](https://github.com/carsomyr/rbenv-bundler)
- [rbenv-communal-gems](https://github.com/tpope/rbenv-communal-gems)
- [rbenv-ctags](https://github.com/tpope/rbenv-ctags)
- [rbenv-default-gems](https://github.com/sstephenson/rbenv-default-gems)
- [rbenv-gem-rehash](https://github.com/sstephenson/rbenv-gem-rehash)
- [rbenv-gemset](https://github.com/jf/rbenv-gemset)
- [rbenv-readline](https://github.com/tpope/rbenv-readline)
- [rbenv-use](https://github.com/rkh/rbenv-use)
- [rbenv-vars](https://github.com/sstephenson/rbenv-vars)
- [rbenv-whatis](https://github.com/rkh/rbenv-whatis)
- [rbenv](https://github.com/sstephenson/rbenv)
- [rc](http://doc.cat-v.org/plan_9/4th_edition/papers/rc)
- [rcs](https://www.gnu.org/software/rcs/)
- [rcssserver](http://sserver.sourceforge.net/)
- [rdate](http://www.aelius.com/njh/rdate/)
- [rdesktop](http://www.rdesktop.org/)
- [rdfind](http://rdfind.pauldreik.se)
- [rdiff-backup](http://rdiff-backup.nongnu.org/)
- [rds-command-line-tools](http://aws.amazon.com/developertools/2928)
- [rdup](http://archive.miek.nl/projects/rdup/index.html)
- [re2](https://code.google.com/p/re2/)
- [re2c](http://re2c.org)
- [readline](http://tiswww.case.edu/php/chet/readline/rltop.html)
- [readosm](https://www.gaia-gis.it/fossil/readosm/index)
- [reattach-to-user-namespace](https://github.com/ChrisJohnsen/tmux-MacOSX-pasteboard)
- [reaver](http://code.google.com/p/reaver-wps/)
- [rebar](https://github.com/rebar/rebar)
- [reclass](http://reclass.pantsfullofunix.net/)
- [recode](http://recode.progiciels-bpi.ca/index.html)
- [recoverjpeg](http://www.rfc1149.net/devel/recoverjpeg.html)
- [recutils](http://www.gnu.org/software/recutils/)
- [redis](http://redis.io/)
- [redland](http://librdf.org/)
- [redo](https://github.com/apenwarr/redo)
- [redsocks](http://darkk.net.ru/redsocks)
- [redstore](http://www.aelius.com/njh/redstore/)
- [regex-opt](http://bisqwit.iki.fi/source/regexopt.html)
- [regina-rexx](http://regina-rexx.sourceforge.net/)
- [regldg](http://regldg.com)
- [remake](http://bashdb.sourceforge.net/remake/)
- [remctl](http://www.eyrie.org/~eagle/software/remctl/)
- [remind](http://www.roaringpenguin.com/products/remind)
- [ren](http://pdb.finkproject.org/pdb/package.php/ren)
- [rename](http://plasmasturm.org/code/rename)
- [renameutils](http://www.nongnu.org/renameutils/)
- [reop](http://www.tedunangst.com/flak/post/reop)
- [repl](https://github.com/defunkt/repl)
- [repo](http://source.android.com/source/git-repo.html)
- [reposurgeon](http://www.catb.org/esr/reposurgeon/)
- [rest-shell](https://github.com/spring-projects/rest-shell)
- [resty](https://github.com/micha/resty)
- [rethinkdb](http://www.rethinkdb.com/)
- [rexster-console](https://github.com/tinkerpop/rexster/wiki)
- [rfcdiff](http://tools.ietf.org/tools/rfcdiff/)
- [rfcmarkup](http://tools.ietf.org/tools/rfcmarkup/)
- [rfcstrip](http://trac.tools.ietf.org/tools/rfcstrip/)
- [rhash](http://rhash.anz.ru/)
- [rhino](http://www.mozilla.org/rhino/)
- [riak](http://basho.com/riak/)
- [riemann](http://riemann.io)
- [rig](http://rig.sourceforge.net/)
- [rinetd](http://www.boutell.com/rinetd/)
- [ringojs](http://ringojs.org)
- [ripmime](http://www.pldaniels.com/ripmime/)
- [rkflashtool](https://sourceforge.net/projects/rkflashtool/)
- [rkhunter](http://rkhunter.sourceforge.net/)
- [rlog](http://www.arg0.net/rlog)
- [rlwrap](http://utopia.knoware.nl/~hlub/rlwrap/)
- [rmcast](http://www.land.ufrj.br/tools/rmcast/rmcast.html)
- [rmtrash](http://www.nightproductions.net/cli.htm)
- [rnv](http://freshmeat.net/projects/rnv)
- [robodoc](http://rfsber.home.xs4all.nl/Robo/robodoc.html)
- [rock](http://ooc-lang.org)
- [rocksdb](http://rocksdb.org)
- [rolldice](https://github.com/sstrickl/rolldice)
- [roundup](http://bmizerany.github.io/roundup)
- [rp](http://0vercl0k.github.io/rp/)
- [rpg](https://github.com/rtomayko/rpg)
- [rpl](http://www.laffeycomputer.com/rpl.html)
- [rpm](http://www.rpm5.org/)
- [rpm2cpio](http://svnweb.freebsd.org/ports/head/archivers/rpm2cpio/)
- [rrdtool](http://oss.oetiker.ch/rrdtool/index.en.html)
- [rsense](http://cx4a.org/software/rsense/)
- [rsnapshot](http://rsnapshot.org)
- [rssh](http://www.pizzashack.org/rssh)
- [rsstail](http://www.vanheusden.com/rsstail/)
- [rsyslog](http://www.rsyslog.com)
- [rt-audio](http://www.music.mcgill.ca/~gary/rtaudio/)
- [rtf2latex2e](http://rtf2latex2e.sourceforge.net/)
- [rtmpdump](http://rtmpdump.mplayerhq.hu)
- [rtorrent](http://libtorrent.rakshasa.no/)
- [rtpbreak](http://www.dallachiesa.com/code/rtpbreak/doc/rtpbreak_en.html)
- [rubber](https://launchpad.net/rubber/)
- [ruby-build](https://github.com/sstephenson/ruby-build)
- [ruby-install](https://github.com/postmodern/ruby-install#readme)
- [ruby](https://www.ruby-lang.org/)
- [runcocoa](https://github.com/michaeltyson/Commandline-Cocoa)
- [runit](http://smarden.org/runit)
- [rush](http://www.gnu.org/software/rush/)
- [rust](http://www.rust-lang.org/)
- [rxvt-unicode](http://software.schmorp.de/pkg/rxvt-unicode.html)
- [ry](https://github.com/jayferd/ry)
- [rzip](http://rzip.samba.org/)
#### S
- [s-lang](http://www.jedsoft.org/slang/)
- [s3-backer](http://code.google.com/p/s3backer/)
- [s3cmd](http://s3tools.org/s3cmd)
- [s3fs](http://code.google.com/p/s3fs/)
- [s3sync](http://s3sync.net)
- [safe-rm](https://launchpad.net/safe-rm)
- [salt](http://supernovae.in2p3.fr/salt/doku.php?id=start)
- [saltstack](http://www.saltstack.org)
- [sam2p](http://code.google.com/p/sam2p/)
- [samba](http://samba.org/)
- [sane-backends](http://www.sane-project.org/)
- [sary](http://sary.sourceforge.net/)
- [sassc](https://github.com/hcatlin/sassc)
- [savana](http://savana.codehaus.org)
- [saxon-b](http://saxon.sourceforge.net/)
- [saxon](http://saxon.sourceforge.net)
- [sbcl](http://www.sbcl.org/)
- [sbt](http://www.scala-sbt.org)
- [sbuild](http://sbuild.org)
- [sc68](http://sc68.atari.org/project.html)
- [scala](http://www.scala-lang.org/)
- [scale2x](http://scale2x.sourceforge.net)
- [scamper](http://www.caida.org/tools/measurement/scamper/)
- [scantailor](http://scantailor.org/)
- [scheme48](http://www.s48.org/)
- [schroedinger](http://diracvideo.org/)
- [scm-manager](http://www.scm-manager.org)
- [scons](http://www.scons.org)
- [screenbrightness](https://github.com/jmstacey/screenbrightness)
- [screenfetch](https://github.com/KittyKatt/screenFetch)
- [screenresolution](https://github.com/jhford/screenresolution)
- [scrollkeeper](http://scrollkeeper.sourceforge.net/)
- [scrub](http://code.google.com/p/diskscrub/)
- [scrypt](https://www.tarsnap.com/scrypt.html)
- [scsh](http://www.scsh.net/)
- [sdcc](http://sdcc.sourceforge.net/)
- [sdcv](http://sdcv.sourceforge.net/)
- [sdelta3](http://sdelta.berlios.de/)
- [sdf](http://strategoxt.org/Sdf/WebHome)
- [sdhash](http://roussev.net/sdhash/sdhash.html)
- [sdl](http://www.libsdl.org/)
- [sdl2](http://www.libsdl.org/)
- [sdl2_gfx](http://www.ferzkopp.net/joomla/content/view/19/14/)
- [sdl2_image](http://www.libsdl.org/projects/SDL_image/)
- [sdl2_mixer](http://www.libsdl.org/projects/SDL_mixer/)
- [sdl2_net](http://www.libsdl.org/projects/SDL_net/)
- [sdl2_ttf](http://www.libsdl.org/projects/SDL_ttf/)
- [sdl_gfx](http://www.ferzkopp.net/joomla/content/view/19/14/)
- [sdl_image](http://www.libsdl.org/projects/SDL_image)
- [sdl_mixer](http://www.libsdl.org/projects/SDL_mixer/)
- [sdl_net](http://www.libsdl.org/projects/SDL_net/)
- [sdl_rtf](http://www.libsdl.org/projects/SDL_rtf/)
- [sdl_sound](http://icculus.org/SDL_sound/)
- [sdl_ttf](http://www.libsdl.org/projects/SDL_ttf/)
- [sec](http://simple-evcorr.sourceforge.net/)
- [sedna](http://www.sedna.org/index.html)
- [seexpr](http://www.disneyanimation.com/technology/seexpr.html)
- [selecta](https://github.com/garybernhardt/selecta)
- [selenium-server-standalone](http://seleniumhq.org/)
- [sendemail](http://caspian.dotconf.net/menu/Software/SendEmail/)
- [ser2net](http://ser2net.sourceforge.net)
- [serd](http://drobilla.net/software/serd/)
- [serialosc](http://docs.monome.org/doku.php?id=app:serialosc)
- [sersniff](http://www.earth.li/projectpurple/progs/sersniff.html)
- [setweblocthumb](http://hasseg.org/setWeblocThumb)
- [sf-pwgen](https://bitbucket.org/anders/sf-pwgen/)
- [sfcgal](http://sfcgal.org/)
- [sflowtool](http://www.inmon.com/technology/sflowTools.php)
- [sfml](http://www.sfml-dev.org/)
- [sgrep](http://www.cs.helsinki.fi/u/jjaakkol/sgrep.html)
- [shadowsocks-libev](https://github.com/madeye/shadowsocks-libev)
- [shakespeare](http://shakespearelang.sourceforge.net/)
- [shapelib](http://shapelib.maptools.org/)
- [shared-desktop-ontologies](http://sourceforge.net/apps/trac/oscaf/)
- [shared-mime-info](http://www.freedesktop.org/wiki/Software/shared-mime-info)
- [shark](http://shark-project.sourceforge.net/)
- [shell.fm](http://nex.scrapping.cc/shell-fm/)
- [shellcheck](http://www.shellcheck.net)
- [shellinabox](https://code.google.com/p/shellinabox/)
- [shiboken](http://www.pyside.org/docs/shiboken)
- [shivavg](http://sourceforge.net/projects/shivavg/)
- [shmcat](http://shmcat.sourceforge.net/)
- [shmux](http://web.taranis.org/shmux/)
- [shntool](http://etree.org/shnutils/shntool/)
- [shocco](http://rtomayko.github.io/shocco/)
- [shorten](http://www.etree.org/shnutils/shorten/)
- [shrewsoft-vpn-client](https://www.shrew.net)
- [shtool](http://www.gnu.org/software/shtool/)
- [shunit2](https://code.google.com/p/shunit2/)
- [sic](http://tools.suckless.org/sic)
- [sickbeard](http://www.sickbeard.com/)
- [siege](http://www.joedog.org/index/siege-home)
- [signing-party](http://pgp-tools.alioth.debian.org/)
- [silc-client](http://silcnet.org/software/users/client/)
- [silk](http://tools.netsa.cert.org/silk/)
- [simgrid](http://simgrid.gforge.inria.fr)
- [simh](http://simh.trailing-edge.com/)
- [simple-tiles](http://propublica.github.io/simple-tiles/)
- [since](http://welz.org.za/projects/since)
- [sip](http://www.riverbankcomputing.co.uk/software/sip)
- [sipcalc](http://www.routemeister.net/projects/sipcalc/)
- [sipp](http://sipp.sourceforge.net/)
- [sipsak](http://sipsak.org/)
- [sisc-scheme](http://sisc-scheme.org/)
- [sispmctl](http://sispmctl.sourceforge.net/)
- [sitecopy](http://www.manyfish.co.uk/sitecopy/)
- [skipfish](http://code.google.com/p/skipfish/)
- [skktools](http://openlab.jp/skk/index-j.html)
- [skytools](http://pgfoundry.org/projects/skytools/)
- [sl](https://github.com/mtoyoda/sl)
- [sleepwatcher](http://www.bernhard-baehr.de/)
- [sleuthkit](http://www.sleuthkit.org/)
- [slimerjs](http://www.slimerjs.org)
- [sloccount](http://www.dwheeler.com/sloccount/)
- [slony](http://slony.info/)
- [slowhttptest](http://code.google.com/p/slowhttptest/)
- [slrn](http://slrn.sourceforge.net/)
- [slurm](https://github.com/mattthias/slurm)
- [smake](http://s-make.sourceforge.net/)
- [smartmontools](http://sourceforge.net/apps/trac/smartmontools/)
- [smartsim](http://smartsim.org.uk)
- [smartypants](http://daringfireball.net/projects/smartypants/)
- [smlnj](http://www.smlnj.org/)
- [snap7](http://snap7.sourceforge.net/)
- [snappy](http://snappy.googlecode.com)
- [snapraid](http://snapraid.sourceforge.net/)
- [snobol4](http://www.snobol4.org/)
- [snort](http://www.snort.org)
- [snownews](https://kiza.eu/software/snownews)
- [sntop](http://sntop.sourceforge.net/)
- [snzip](https://github.com/kubo/snzip)
- [socat](http://www.dest-unreach.org/socat/)
- [soccerwindow2](http://sourceforge.jp/projects/rctools/)
- [soci](http://soci.sourceforge.net/)
- [sofia-sip](http://sofia-sip.sourceforge.net/)
- [solfege](http://www.solfege.org/)
- [solid](http://www.dtecta.com/)
- [solr](http://lucene.apache.org/solr/)
- [somagic-tools](https://code.google.com/p/easycap-somagic-linux/)
- [somagic](https://code.google.com/p/easycap-somagic-linux/)
- [sonar-runner](http://docs.codehaus.org/display/SONAR/Installing+and+Configuring+SonarQube+Runner)
- [sonar](http://www.sonarqube.org/)
- [soprano](http://soprano.sourceforge.net/)
- [sord](http://drobilla.net/software/sord/)
- [sound-touch](http://www.surina.net/soundtouch/)
- [source-highlight](http://www.gnu.org/software/src-highlite/)
- [sox](http://sox.sourceforge.net/)
- [spark](http://zachholman.com/spark/)
- [sparkey](https://github.com/spotify/sparkey/)
- [spatialindex](http://libspatialindex.github.io)
- [spatialite-gui](https://www.gaia-gis.it/fossil/spatialite_gui/index)
- [spatialite-tools](https://www.gaia-gis.it/fossil/spatialite-tools/index)
- [spawn-fcgi](http://redmine.lighttpd.net/projects/spawn-fcgi)
- [spdylay](https://github.com/tatsuhiro-t/spdylay)
- [speedtest_cli](https://github.com/sivel/speedtest-cli)
- [speex](http://speex.org)
- [sphinx](http://www.sphinxsearch.com)
- [spidermonkey](https://developer.mozilla.org/en/SpiderMonkey)
- [spim](http://spimsimulator.sourceforge.net/)
- [spin](http://spinroot.com/spin/whatispin.html)
- [spiped](https://www.tarsnap.com/spiped.html)
- [splint](http://www.splint.org/)
- [spring-loaded](https://github.com/spring-projects/spring-loaded)
- [spring-roo](http://www.springsource.org/spring-roo)
- [sproxy](http://www.joedog.org/index/sproxy-home)
- [sptk](http://sp-tk.sourceforge.net/)
- [sqlcipher](http://sqlcipher.net)
- [sqlite](http://sqlite.org/)
- [sqlitebrowser](http://sqlitebrowser.org)
- [sqliteman](http://www.sqliteman.com/)
- [sqlmap](http://sqlmap.org)
- [sqoop](http://sqoop.apache.org/)
- [sqsh](http://www.cs.washington.edu/~rose/sqsh/sqsh.html)
- [squashfs](http://squashfs.sourceforge.net/)
- [squid](http://www.squid-cache.org/)
- [squirrel](http://www.squirrel-lang.org)
- [sratom](http://drobilla.net/software/sratom/)
- [srecord](http://srecord.sourceforge.net/)
- [srmio](http://www.zuto.de/project/srmio/)
- [srtp](http://srtp.sourceforge.net/srtp.html)
- [ssdb](http://ssdb.io/?lang=en)
- [ssdeep](http://ssdeep.sourceforge.net/)
- [ssed](http://sed.sourceforge.net/grabbag/ssed/)
- [ssh-copy-id](http://www.openssh.com/)
- [sshfs](http://osxfuse.github.io/)
- [sshguard](http://www.sshguard.net/)
- [sshrc](https://github.com/Russell91/sshrc)
- [sshtrix](http://www.nullsecurity.net/tools/cracker.html)
- [sshuttle](https://github.com/apenwarr/sshuttle)
- [ssldump](http://www.rtfm.com/ssldump/)
- [sslh](http://www.rutschle.net/tech/sslh.shtml)
- [sslscan](https://www.titania-security.com/labs/sslscan)
- [ssreflect](http://www.msr-inria.fr/projects/mathematical-components-2/)
- [ssss](http://point-at-infinity.org/ssss/)
- [st](https://github.com/nferraz/st)
- [stanford-parser](http://nlp.stanford.edu/software/lex-parser.shtml)
- [star](http://cdrecord.org/private/star.html)
- [stgit](http://gna.org/projects/stgit/)
- [stk](https://ccrma.stanford.edu/software/stk/)
- [stklos](http://www.stklos.net/)
- [stlviewer](https://github.com/vishpat/stlviewer#readme)
- [stone](http://www.gcd.org/sengoku/stone/)
- [storm](https://github.com/nathanmarz/storm/wiki)
- [stormfs](https://github.com/benlemasurier/stormfs)
- [stow](http://www.gnu.org/software/stow/)
- [streamripper](http://streamripper.sourceforge.net/)
- [stress](http://rpmfind.net/linux/RPM/fedora/18/x86_64/s/stress-1.0.4-8.fc18.x86_64.html)
- [strigi](http://strigi.sourceforge.net/)
- [strongswan](http://www.strongswan.org)
- [stunnel](http://www.stunnel.org/)
- [stuntman](http://www.stunprotocol.org/)
- [style-check](http://www.cs.umd.edu/~nspring/software/style-check-readme.html)
- [sub2srt](https://github.com/robelix/sub2srt)
- [submarine](https://github.com/rastersoft/submarine)
- [subnetcalc](http://www.iem.uni-due.de/~dreibh/subnetcalc/)
- [subversion](https://subversion.apache.org/)
- [suomi-malaga-voikko](http://voikko.puimula.org/)
- [surfraw](http://surfraw.alioth.debian.org/)
- [suricata](http://suricata-ids.org)
- [svdlibc](http://tedlab.mit.edu/~dr/SVDLIBC/)
- [svg2pdf](http://cairographics.org/)
- [svg2png](http://cairographics.org/)
- [svtplay-dl](https://github.com/spaam/svtplay-dl)
- [swaks](http://www.jetmore.org/john/code/swaks/)
- [swatchbooker](http://www.selapa.net/swatchbooker/)
- [swfmill](http://swfmill.org)
- [swftools](http://www.swftools.org)
- [swi-prolog](http://www.swi-prolog.org/)
- [swig](http://www.swig.org/)
- [swish-e](http://swish-e.org/)
- [switchaudio-osx](https://github.com/deweller/switchaudio-osx/)
- [sxiv](https://github.com/muennich/sxiv)
- [syck](https://wiki.github.com/indeyets/syck/)
- [sylpheed](http://sylpheed.sraoss.jp/en/)
- [sync_gateway](http://docs.couchbase.com/sync-gateway)
- [syncthing](http://syncthing.net)
- [synfig](http://synfig.org)
- [synfigstudio](http://synfig.org)
- [sysbench](http://sysbench.sourceforge.net/)
- [sysdig](http://www.sysdig.org/)
- [syslog-ng](http://www.balabit.com/network-security/syslog-ng/)
- [szip](http://www.hdfgroup.org/HDF5/release/obtain5.html#extlibs)
- [szl](http://code.google.com/p/szl/)
#### T
- [t1lib](http://www.t1lib.org/)
- [t1utils](http://www.lcdf.org/type/)
- [ta-lib](http://ta-lib.org/index.html)
- [tabbed](http://tools.suckless.org/tabbed)
- [tag](https://github.com/jdberry/tag/)
- [taglib](http://taglib.github.io/)
- [taktuk](http://taktuk.gforge.inria.fr/)
- [tal](http://thomasjensen.com/software/tal/)
- [talk-filters](http://www.hyperrealm.com/main.php?s=talkfilters)
- [talloc](http://talloc.samba.org/)
- [tarsnap](https://www.tarsnap.com/)
- [task-spooler](http://vicerveza.homeunix.net/~viric/soft/ts/)
- [task](http://www.taskwarrior.org/)
- [taskd](http://taskwarrior.org/projects/show/taskwarrior)
- [tbb](http://www.threadingbuildingblocks.org/)
- [tcc](http://bellard.org/tcc/)
- [tclap](http://tclap.sourceforge.net/)
- [tcpflow](https://github.com/simsong/tcpflow)
- [tcping](http://www.linuxco.de/tcping/tcping.html)
- [tcpreplay](http://tcpreplay.appneta.com)
- [tcpsplit](http://www.icir.org/mallman/software/tcpsplit/)
- [tcptrace](http://www.tcptrace.org/)
- [tcptraceroute](https://github.com/mct/tcptraceroute)
- [tcptrack](http://www.rhythm.cx/~steve/devel/tcptrack/)
- [tcptunnel](http://www.vakuumverpackt.de/tcptunnel/)
- [tcpurify](http://irg.cs.ohiou.edu/~eblanton/tcpurify/)
- [tcsh](http://www.tcsh.org/)
- [teapot](http://www.syntax-k.de/projekte/teapot/)
- [tee-clc](http://www.microsoft.com/en-us/download/details.aspx?id=4240)
- [teem](http://teem.sourceforge.net/)
- [teensy_loader_cli](https://www.pjrc.com/teensy/loader_cli.html)
- [tegh](https://github.com/D1plo1d/tegh)
- [telepathy-gabble](http://telepathy.freedesktop.org/wiki/Components/)
- [telepathy-glib](http://telepathy.freedesktop.org/wiki/)
- [telepathy-idle](http://telepathy.freedesktop.org/wiki/Components/)
- [telepathy-mission-control](http://telepathy.freedesktop.org/wiki/Mission_Control/)
- [tenyr](http://tenyr.info/)
- [term](https://github.com/liyanage/macosx-shell-scripts/blob/master/term)
- [terminal-notifier](https://github.com/alloy/terminal-notifier)
- [terminator](https://launchpad.net/terminator)
- [termrec](http://angband.pl/termrec.html)
- [termshare](https://termsha.re)
- [terraform](http://www.terraform.io/)
- [tesseract](http://code.google.com/p/tesseract-ocr/)
- [testdisk](http://www.cgsecurity.org/wiki/TestDisk)
- [tevent](http://tevent.samba.org/)
- [tex-live](http://www.tug.org/texlive/)
- [texapp](http://www.floodgap.com/software/texapp/)
- [texi2html](http://www.nongnu.org/texi2html/)
- [texinfo](http://www.gnu.org/software/texinfo/)
- [texmacs](http://www.texmacs.org)
- [texwrapper](http://obrecht.fr/texwrapper/)
- [thc-pptp-bruter](http://thc.org)
- [the_platinum_searcher](https://github.com/monochromegane/the_platinum_searcher)
- [the_silver_searcher](https://github.com/ggreer/the_silver_searcher)
- [theharvester](https://code.google.com/p/theharvester/)
- [theora](http://www.theora.org/)
- [thrift](http://thrift.apache.org)
- [thrulay](http://sourceforge.net/projects/thrulay/)
- [tidyp](http://tidyp.com/)
- [tiff2png](http://www.libpng.org/pub/png/apps/tiff2png.html)
- [tig](http://jonas.nitro.dk/tig/)
- [tiger-vnc](http://tigervnc.org/)
- [tika](http://tika.apache.org/)
- [timbl](http://ilk.uvt.nl/timbl/)
- [timedog](http://timedog.googlecode.com/)
- [timelimit](http://devel.ringlet.net/sysutils/timelimit/)
- [timidity](http://timidity.sourceforge.net/)
- [tin](http://www.tin.org)
- [tinc](http://www.tinc-vpn.org)
- [tintin](http://tintin.sf.net)
- [tiny-fugue](http://tinyfugue.sourceforge.net/)
- [tinycdb](http://www.corpit.ru/mjt/tinycdb.html)
- [tinyproxy](https://www.banu.com/tinyproxy/)
- [tinyscheme](http://tinyscheme.sourceforge.net)
- [tinysvm](http://chasen.org/~taku/software/TinySVM/)
- [tinyxml](http://www.grinninglizard.com/tinyxml/)
- [tinyxml2](http://grinninglizard.com/tinyxml2)
- [titan-server](https://thinkaurelius.github.io/titan/)
- [tivodecode](http://tivodecode.sourceforge.net/)
- [tkdiff](http://tkdiff.sourceforge.net/)
- [tlassemble](http://www.dayofthenewdan.com/projects/tlassemble/)
- [tlsdate](https://www.github.com/ioerror/tlsdate/)
- [tmap](https://github.com/iontorrent/TMAP)
- [tmpreaper](http://packages.debian.org/tmpreaper)
- [tmpwatch](https://fedorahosted.org/tmpwatch/)
- [tmux-cssh](https://github.com/dennishafemann/tmux-cssh)
- [tmux-mem-cpu-load](https://github.com/thewtex/tmux-mem-cpu-load)
- [tmux](http://tmux.sourceforge.net)
- [tn5250](http://tn5250.sourceforge.net/)
- [tnef](http://sourceforge.net/projects/tnef/)
- [tnote](http://tnote.sourceforge.net/)
- [todo-txt](http://todotxt.com/)
- [tofrodos](http://www.thefreecountry.com/tofrodos/)
- [toilet](http://caca.zoy.org/wiki/toilet)
- [tokyo-cabinet](http://fallabs.com/tokyocabinet/)
- [tokyo-dystopia](http://fallabs.com/tokyodystopia/)
- [tokyo-tyrant](http://fallabs.com/tokyotyrant/)
- [tomcat-native](http://tomcat.apache.org/native-doc/)
- [tomcat](http://tomcat.apache.org/)
- [tomee-jax-rs](http://tomee.apache.org/)
- [tomee-plus](http://tomee.apache.org/)
- [tomee-webprofile](http://tomee.apache.org/)
- [topgit](https://github.com/greenrd/topgit)
- [tor](https://www.torproject.org/)
- [torrentcheck](http://torrentcheck.sourceforge.net/)
- [torsocks](https://gitweb.torproject.org/torsocks.git/)
- [tpl](http://troydhanson.github.io/tpl/)
- [tpp](http://synflood.at/tpp.html)
- [tracebox](http://www.tracebox.org/)
- [tractorgen](http://www.vergenet.net/~conrad/software/tractorgen/)
- [trafficserver](http://trafficserver.apache.org/)
- [trafshow](http://soft.risp.ru/trafshow/index_en.shtml)
- [trang](http://code.google.com/p/jing-trang/)
- [transcrypt](https://github.com/elasticdog/transcrypt#readme)
- [translate-toolkit](http://toolkit.translatehouse.org/)
- [transmission-remote-gtk](http://code.google.com/p/transmission-remote-gtk/)
- [transmission](http://www.transmissionbt.com/)
- [trash](http://hasseg.org/trash/)
- [tre](http://laurikari.net/tre/)
- [tree](http://mama.indstate.edu/users/ice/tree/)
- [treecc](http://gnu.org/software/dotgnu/treecc/treecc.html)
- [treeline](http://treeline.bellz.org/)
- [truecrack](https://code.google.com/p/truecrack/)
- [tsung](http://tsung.erlang-projects.org/)
- [tta](http://www.true-audio.com)
- [ttf2eot](http://code.google.com/p/ttf2eot/)
- [ttf2pt1](http://ttf2pt1.sourceforge.net/)
- [ttfautohint](http://www.freetype.org/ttfautohint)
- [tth](http://hutchinson.belmont.ma.us/tth/)
- [tty-clock](https://github.com/xorg62/tty-clock)
- [ttylog](http://ttylog.sourceforge.net/)
- [ttyrec](http://0xcc.net/ttyrec/)
- [ttytter](http://www.floodgap.com/software/ttytter/)
- [tuntap](http://tuntaposx.sourceforge.net/)
- [tup](http://gittup.org/tup/)
- [twemcache](https://github.com/twitter/twemcache)
- [two-lame](http://www.twolame.org/)
- [txt2man](http://mvertes.free.fr/)
- [txt2tags](http://txt2tags.org)
- [typesafe-activator](http://typesafe.com/activator)
- [typespeed](http://typespeed.sourceforge.net)
#### U
- [u-boot-tools](http://www.denx.de/wiki/U-Boot/)
- [uade](http://zakalwe.fi/uade/)
- [uberftp](http://dims.ncsa.illinois.edu/set/uberftp/)
- [uchardet](http://code.google.com/p/uchardet/)
- [ucl](http://www.oberhumer.com/opensource/ucl/)
- [ucspi-tcp](http://cr.yp.to/ucspi-tcp.html)
- [udis86](http://udis86.sourceforge.net)
- [udns](http://www.corpit.ru/mjt/udns.html)
- [udptunnel](http://www.cs.columbia.edu/~lennox/udptunnel)
- [udpxy](http://www.udpxy.com/)
- [udunits](http://www.unidata.ucar.edu/software/udunits/)
- [ufraw](http://ufraw.sourceforge.net)
- [uim](http://code.google.com/p/uim/)
- [ume](http://mamedev.org/)
- [unac](http://savannah.nongnu.org/projects/unac)
- [unar](http://unarchiver.c3.cx/commandline)
- [unbound](http://www.unbound.net)
- [uncrustify](http://uncrustify.sourceforge.net/)
- [unfs3](http://unfs3.sourceforge.net)
- [unifdef](http://dotat.at/prog/unifdef/)
- [unison](http://www.cis.upenn.edu/~bcpierce/unison/)
- [unittest-cpp](http://unittest-cpp.sourceforge.net/)
- [unittest](http://unittest.red-bean.com/)
- [unixodbc](http://www.unixodbc.org/)
- [unoconv](http://dag.wiee.rs/home-made/unoconv/)
- [unp](http://packages.debian.org/source/stable/unp)
- [unpaper](https://www.flameeyes.eu/projects/unpaper)
- [unrar](http://www.rarlab.com)
- [unrtf](http://www.gnu.org/software/unrtf/)
- [unshield](https://github.com/twogood/unshield)
- [upnp-router-control](https://launchpad.net/upnp-router-control)
- [uptimed](http://podgorny.cz/moin/Uptimed)
- [upx](http://upx.sourceforge.net)
- [uriparser](http://uriparser.sourceforge.net/)
- [urlview](http://packages.debian.org/unstable/misc/urlview)
- [uru](https://bitbucket.org/jonforums/uru)
- [urweb](http://impredicative.com/ur/)
- [usbmuxd](http://www.libimobiledevice.org)
- [userspace-rcu](http://lttng.org/urcu)
- [ushare](http://ushare.geexbox.org/)
- [utimer](http://utimer.codealpha.net/utimer/)
- [uudeview](http://www.fpx.de/fp/Software/UUDeview/)
- [uwsgi](http://projects.unbit.it/uwsgi/)
#### V
- [v](https://github.com/rupa/v)
- [v8](http://code.google.com/p/v8/)
- [vala](http://live.gnome.org/Vala)
- [valabind](http://radare.org/)
- [valgrind](http://www.valgrind.org/)
- [valkyrie](http://valgrind.org/downloads/guis.html)
- [varnish](http://www.varnish-cache.org/)
- [vassh](https://github.com/x-team/vassh)
- [vault-cli](http://jackrabbit.apache.org/filevault/index.html)
- [vbindiff](http://www.cjmweb.net/vbindiff/)
- [vcdimager](http://www.gnu.org/software/vcdimager/)
- [vcodex](http://www2.research.att.com/~astopen/download/ref/vcodex/vcodex.html)
- [vcprompt](https://bitbucket.org/gward/vcprompt)
- [vcsh](https://github.com/RichiH/vcsh)
- [vde](http://vde.sourceforge.net/)
- [vera++](https://bitbucket.org/verateam/vera)
- [verilator](http://www.veripool.org/wiki/verilator)
- [vert.x](http://vertx.io/)
- [vf](https://github.com/glejeune/vf)
- [vgmstream](http://hcs64.com/vgmstream.html)
- [vice](http://vice-emu.sourceforge.net/)
- [viewglob](http://viewglob.sourceforge.net/)
- [vifm](http://vifm.sourceforge.net/index.html)
- [vilistextum](http://bhaak.dyndns.org/vilistextum/)
- [vim](http://www.vim.org/)
- [vimpager](https://github.com/rkitover/vimpager)
- [vimpc](http://sourceforge.net/projects/vimpc/)
- [vip](http://www.cs.duke.edu/~des/vip.html)
- [virtualhost.sh](https://github.com/virtualhost/virtualhost.sh)
- [virtualpg](https://www.gaia-gis.it/fossil/virtualpg/index)
- [virtuoso](http://virtuoso.openlinksw.com/wiki/main/)
- [visionmedia-watch](https://github.com/visionmedia/watch)
- [visitors](http://www.hping.org/visitors/)
- [visualnetkit](http://code.google.com/p/visual-netkit/)
- [vit](http://taskwarrior.org/news/news.20140406.html)
- [vmalloc](http://www2.research.att.com/sw/download/)
- [vncsnapshot](http://sourceforge.net/projects/vncsnapshot/)
- [vnstat](http://humdi.net/vnstat/)
- [vobcopy](http://vobcopy.org)
- [volatility](https://github.com/volatilityfoundation/volatility)
- [voldemort](http://project-voldemort.com/)
- [voltdb](https://github.com/VoltDB/voltdb)
- [voms](https://github.com/italiangrid/voms)
- [vorbis-tools](http://vorbis.com)
- [vorbisgain](http://sjeng.org/vorbisgain.html)
- [vowpal-wabbit](https://github.com/JohnLangford/vowpal_wabbit)
- [vpnc](http://www.unix-ag.uni-kl.de/~massar/vpnc/)
- [vramsteg](http://tasktools.org/projects/vramsteg.html)
- [vrpn](http://vrpn.org)
- [vsftpd](https://security.appspot.com/vsftpd.html)
- [vstr](http://www.and.org/vstr/)
- [vtclock](http://webonastick.com/vtclock/)
- [vte](http://developer.gnome.org/vte/)
- [vte3](http://developer.gnome.org/vte/)
- [vttest](http://invisible-island.net/vttest/)
#### W
- [w-calc](http://w-calc.sourceforge.net)
- [w3m](http://w3m.sourceforge.net/)
- [wait_on](http://www.freshports.org/sysutils/wait_on/)
- [wakeonlan](http://gsd.di.uminho.pt/jpo/software/wakeonlan/)
- [waon](http://waon.sourceforge.net)
- [watch](http://procps.sourceforge.net/)
- [watchman](https://github.com/facebook/watchman)
- [wavpack](http://www.wavpack.com/)
- [wbox](http://hping.org/wbox/)
- [wdfs](http://noedler.de/projekte/wdfs/)
- [wdiff](http://www.gnu.org/software/wdiff/)
- [web100clt](http://www.internet2.edu/performance/ndt/)
- [webalizer](http://www.mrunix.net/webalizer/)
- [webfs](http://linux.bytesex.org/misc/webfs.html)
- [webkit2png](http://www.paulhammond.org/webkit2png/)
- [webp](http://code.google.com/speed/webp/)
- [weechat](http://www.weechat.org)
- [weighttp](http://redmine.lighttpd.net/projects/weighttp/wiki)
- [wemux](https://github.com/zolrath/wemux)
- [wget](http://www.gnu.org/software/wget/)
- [wgetpaste](http://wgetpaste.zlin.dk/)
- [whatmask](http://www.laffeycomputer.com/whatmask.html)
- [when](http://www.lightandmatter.com/when/when.html)
- [whirr](http://whirr.apache.org/)
- [whitedb](http://whitedb.org/)
- [whohas](http://www.philippwesche.org/200811/whohas/intro.html)
- [wiggle](http://neil.brown.name/blog/20100324064620)
- [wildfly-as](http://wildfly.org/)
- [wimlib](http://sourceforge.net/projects/wimlib/)
- [wine](http://winehq.org/)
- [winetricks](http://code.google.com/p/winetricks/)
- [winexe](http://sourceforge.net/projects/winexe/)
- [wireshark](http://www.wireshark.org)
- [wkhtmltopdf](http://code.google.com/p/wkhtmltopdf/)
- [wla-dx](http://www.villehelin.com/wla.html)
- [wmctrl](http://sweb.cz/tripie/utils/wmctrl/)
- [woof](http://www.home.unix-ag.org/simon/woof.html)
- [wopr](http://ilk.uvt.nl/wopr)
- [wordnet](http://wordnet.princeton.edu/)
- [wordplay](http://hsvmovies.com/static_subpages/personal_orig/wordplay/index.html)
- [wps2odt](http://libwps.sourceforge.net)
- [wput](http://wput.sourceforge.net/)
- [wrangler](http://www.cs.kent.ac.uk/projects/forse/)
- [writerperfect](http://libwpd.sourceforge.net/)
- [wrk-trello](https://github.com/blangel/wrk)
- [wrk](https://github.com/wg/wrk)
- [wry](http://grailbox.com/wry/)
- [wtf](http://cvsweb.netbsd.org/bsdweb.cgi/src/games/wtf/)
- [wv](http://wvware.sourceforge.net/)
- [wv2](http://wvware.sourceforge.net/)
- [wwwoffle](http://www.gedanken.org.uk/software/wwwoffle/)
- [wxmac](http://www.wxwidgets.org)
- [wxpython](http://www.wxwidgets.org)
- [wy60](https://code.google.com/p/wy60/)
- [wyrd](http://pessimization.com/software/wyrd/)
#### X
- [x11vnc](http://www.karlrunge.com/x11vnc/)
- [x264](https://www.videolan.org/developers/x264.html)
- [x265](http://x265.org)
- [x3270](http://x3270.bgp.nu/)
- [xa](http://www.floodgap.com/retrotech/xa/)
- [xapian](http://xapian.org)
- [xar](http://code.google.com/p/xar/)
- [xaric](http://xaric.org/)
- [xastir](http://www.xastir.org/)
- [xbee-comm](https://github.com/guyzmo/xbee-comm.git)
- [xchat](http://xchat.org)
- [xclip](http://xclip.sourceforge.net/)
- [xcproj](https://github.com/0xced/xcproj)
- [xctool](https://github.com/facebook/xctool)
- [xdelta](http://xdelta.org)
- [xdotool](http://www.semicomplete.com/projects/xdotool/)
- [xdu](http://sd.wareonearth.com/~phil/xdu/)
- [xerces-c](http://xerces.apache.org/xerces-c/)
- [xlslib](http://sourceforge.net/projects/xlslib)
- [xml-coreutils](http://www.lbreyer.com/xml-coreutils.html)
- [xml-security-c](http://santuario.apache.org/)
- [xml-tooling-c](https://wiki.shibboleth.net/confluence/display/OpenSAML/XMLTooling-C)
- [xml2](http://ofb.net/~egnor/xml2/)
- [xmlcatmgr](http://xmlcatmgr.sourceforge.net)
- [xmlformat](http://www.kitebird.com/software/xmlformat/)
- [xmlrpc-c](http://xmlrpc-c.sourceforge.net/)
- [xmlsh](http://www.xmlsh.org)
- [xmlstarlet](http://xmlstar.sourceforge.net/)
- [xmlto](http://cyberelk.net/tim/software/xmlto/)
- [xmltoman](http://sourceforge.net/projects/xmltoman/)
- [xmount](https://www.pinguin.lu/index.php)
- [xmp](http://xmp.sourceforge.net)
- [xorriso](https://www.gnu.org/software/xorriso/)
- [xournal](http://xournal.sourceforge.net)
- [xpa](http://hea-www.harvard.edu/RD/xpa/)
- [xpdf](http://www.foolabs.com/xpdf/)
- [xplanet](http://xplanet.sourceforge.net/)
- [xplanetfx](http://mein-neues-blog.de/xplanetFX/)
- [xplot](http://www.xplot.org)
- [xqilla](http://xqilla.sourceforge.net/)
- [xrootd](http://xrootd.org)
- [xsane](http://www.xsane.org)
- [xspin](http://spinroot.com/spin/Src/index.html)
- [xspringies](http://www.cs.rutgers.edu/~decarlo/software.html)
- [xstow](http://xstow.sourceforge.net/)
- [xsw](http://code.google.com/p/xsw/)
- [xtail](http://www.unicom.com/sw/xtail)
- [xtitle](http://www.cs.indiana.edu/~kinzler/xtitle/)
- [xulrunner](https://developer.mozilla.org/docs/XULRunner)
- [xvid](http://www.xvid.org)
- [xz](http://tukaani.org/xz/)
#### Y
- [yacas](http://yacas.sourceforge.net)
- [yaf](http://tools.netsa.cert.org/yaf/)
- [yafc](http://www.yafc-ftp.com/)
- [yajl](http://lloyd.github.io/yajl/)
- [yamcha](http://chasen.org/~taku/software/yamcha/)
- [yamdi](http://yamdi.sourceforge.net/)
- [yaml-cpp](http://code.google.com/p/yaml-cpp/)
- [yap](http://www.dcc.fc.up.pt/~vsc/Yap/index.html)
- [yara](https://github.com/plusvic/yara/)
- [yarp](http://yarp.it)
- [yasm](http://yasm.tortall.net/)
- [yaws](http://yaws.hyber.org)
- [yaz](http://www.indexdata.com/yaz)
- [yaze-ag](http://www.mathematik.uni-ulm.de/users/ag/yaze-ag/)
- [yazpp](http://www.indexdata.com/yazpp)
- [yconalyzer](http://sourceforge.net/projects/yconalyzer/)
- [ydict](https://github.com/chenpc/ydict)
- [yeti](http://mth.github.io/yeti/)
- [ykclient](http://yubico.github.io/yubico-c-client/)
- [ykpers](http://yubico.github.io/yubikey-personalization/)
- [yle-dl](http://aajanki.github.io/yle-dl/)
- [youtube-dl](http://rg3.github.io/youtube-dl/)
- [yubico-piv-tool](http://opensource.yubico.com/yubico-piv-tool/)
- [yuicompressor](http://yui.github.io/yuicompressor/)
- [yydecode](http://yydecode.sourceforge.net)
#### Z
- [z](https://github.com/rupa/z)
- [z80asm](http://www.nongnu.org/z80asm/)
- [z80dasm](http://www.tablix.org/~avian/blog/articles/z80dasm/)
- [zabbix](http://www.zabbix.com/)
- [zbackup](http://zbackup.org)
- [zbar](http://zbar.sourceforge.net)
- [zdelta](http://cis.poly.edu/zdelta/)
- [zebra](http://www.indexdata.com/zebra)
- [zenity](http://live.gnome.org/Zenity)
- [zeromq](http://www.zeromq.org/)
- [zile](https://www.gnu.org/software/zile/)
- [zinc](https://github.com/typesafehub/zinc)
- [zint](http://zint.github.io/)
- [zmap](https://zmap.io)
- [znc](http://wiki.znc.in/ZNC)
- [zookeeper](http://zookeeper.apache.org/)
- [zopfli](https://code.google.com/p/zopfli/)
- [zpaq](http://mattmahoney.net/dc/zpaq.html)
- [zpython](https://bitbucket.org/ZyX_I/zsh)
- [zsh-completions](https://github.com/zsh-users/zsh-completions)
- [zsh-history-substring-search](https://github.com/zsh-users/zsh-history-substring-search)
- [zsh-lovers](http://grml.org/zsh/#zshlovers)
- [zsh-syntax-highlighting](https://github.com/zsh-users/zsh-syntax-highlighting)
- [zsh](http://www.zsh.org/)
- [zshdb](https://github.com/rocky/zshdb)
- [zssh](http://zssh.sourceforge.net/)
- [zsync](http://zsync.moria.org.uk/)
- [zxcc](http://www.seasip.info/Unix/Zxcc/)
- [zzuf](http://caca.zoy.org/wiki/zzuf)