| 0 A.D. | Real-time strategy game of ancient warfare | http://play0ad.com/ | PublicDomain
Other
GPLv2orlater
Expat
LGPLv2.1orlater
Creative Commons Attribution Share-Alike 2.5 | |
| 123sqlengine | 123sqlengine is a functional relational database engine | https://sourceforge.net/projects/sql123engine/ | GPLv2orlater | |
| 2532 Gigs | A PHP/SQL gig lister. | http://www.sourceforge.net/projects/gigs-2532 | SimplePermissive | |
| 2wm | a dynamic window manager for X. | https://web.archive.org/web/20150924100340/http://git.suckless.org/2wm | Expat | |
| 389-admin | 389 Directory Administration Server | http://directory.fedoraproject.org | Other
GPLv2 | |
| 389-admin-console | 389 admin server management console | http://directory.fedoraproject.org | GPLv2 | |
| 389-adminutil | Utility library for 389ds administration | http://directory.fedoraproject.org | Other | |
| 389-console | 389 Management Console | http://directory.fedoraproject.org | GPLv2orlater
LGPLv2 | |
| 389-ds-base | 389 Directory Server suite - server | http://directory.fedoraproject.org | Other
GPLv2orlater | |
| 389-ds-console | 389 Directory Server Management Console | http://directory.fedoraproject.org | GPLv2 | |
| 389-dsgw | 389 Directory Server Gateway | http://directory.fedoraproject.org | Other
GPLv2 | |
| 3D Pong | A vector-based ball-bouncing game for X-Window | http://www.newbreedsoftware.com/3dpong/ | GPLv2 | |
| 3dFB | 3D file manager and browser | https://sourceforge.net/projects/dz3d/ | GPLv2 | |
| 3dldf | Three-dimensional drawing with MetaPost output. | https://www.gnu.org/software/3dldf/ | SimplePermissiveNoNonWarranty
SimplePermissiveNonWarranty
GFDL
Other
GPLv2orlater with exception
GPLv2orlater
GPLv3orlater
GPLv3orlater with exception | [[File:Heckert_gnu.small.png|30px]]
|
| 3dpl GE | The 3D Programming Language | http://amigojapan.github.io/3dpl/ | GPLv3 with exception | |
| 4Pane | A dual twin-pane GNU/Linux filemanager | https://www.4pane.co.uk/ | GPLv3 | |
| 4digits | guess-the-number game, aka Bulls and Cows | http://sourceforge.net/projects/fourdigits/ | GPLv2orlater | |
| 4store | RDF database storage and query engine -- database daemon | https://github.com/garlik/4store | PublicDomain
Zlib
Other
GPLv2orlater with exception
GPLv3orlater | |
| 4tH | Forth compiler with a conventional compiler instead of the standard Forth engine | http://www.xs4all.nl/~thebeez/4tH/foldtree.html | GPLv3orlater | |
| 6tunnel | TCP proxy for non-IPv6 applications | http://toxygen.net/6tunnel | GPLv2orlater | |
| 7kaa | Seven Kingdoms Ancient Adversaries: real-time strategy game | http://www.7kfans.com/ | GPLv2orlater | |
| 7kaa-data | Seven Kingdoms Ancient Adversaries - game data | http://www.enlight.com/7k/ | GPLv2orlater | |
| 7zip | File archiver with a high compression ratio | https://www.7-zip.org/ | | |
| 86box | Cycle-accurate i386 PC emulator | https://86box.net/ | | |
| 8sync | Asynchronous programming for Guile. | https://www.gnu.org/software/8sync/ | SimplePermissiveNoNonWarranty
SimplePermissiveNonWarranty
Other
Expat
GPLv3orlater
LGPLv3orlater
Creative Commons Attribution 3.0
GFDLv1.3orlater | [[File:Heckert_gnu.small.png|30px]]
|
| 9menu | Creates X menus from the shell | https://tracker.debian.org/pkg/9menu | Other
GPLv3orlater | |
| 9mount | Tools for mounting 9p filesystems on the Linux kernel | http://sqweek.net/code/9mount/ | ISC | |
| A Bingo | A/Bingo plugin for Rails. | http://github.com/ryanb/abingo | Expat | |
| A+ | Programming language (APL interpreter) | http://www.aplusdev.org/ | GPLv2 | |
| A2K | Small unobtrusive IRC bot | http://accutron2000.sourceforge.net/ | GPLv2orlater | |
| A2b | An abstract train game. | https://github.com/marcosmendez/a2b | GPLv2 | |
| A2png | Converts plain text into PNG images. | https://sourceforge.net/projects/a2png/ | GPLv2orlater | |
| A2ps | Any to PostScript filter. | https://www.gnu.org/software/a2ps/ | SimplePermissiveNonWarranty
Other
GPLv2orlater
GPLv3orlater
GPLv3orlater with exception | [[File:Heckert_gnu.small.png|30px]] |
| AAK-Cont | Anti-Adblock Killer Continued | https://xuhaiyang1234.gitlab.io/AAK-Cont/ | GPLv3 | |
| AB-Transfers | simple online banking application for online money transfers | http://schmufu.dyndns.org/dokuwiki/ab transfer:start | Other
GPLv2orlater
LGPLv3 | |
| ABC | ABC - A System for Sequential Synthesis and Verification | http://www.eecs.berkeley.edu/~alanmi/abc/ | Other
GPLv2orlater | |
| ABI Dumper | tool to dump ABI of an ELF object containing DWARF debug info | https://abi-laboratory.pro/ | GPLv2 | |
| ABI compliance checker | tool to compare ABI compatibility of shared C/C++ library versions | https://abi-laboratory.pro/ | GPLv3orlater | |
| ABINIT | package for electronic structure calculations | http://www.abinit.org/ | Other | |
| ABX Tester | audio ABX testing software | http://phintsan.kapsi.fi/abx.html | GPLv3orlater | |
| ABYSS | Automates some streaming operations and provides feedback for volunteers | https://vcs.fsf.org/?p=libre-streamer.git&a=summary | GPLv3orlater | |
| ABridge | Online bridge game | https://github.com/pld-linux/abridge | GPLv2orlater | |
| ACDK | Java-like C++ framework with scripting and distributed components | http://acdk.sourceforge.net | LGPL | |
| ACE UC Sniffer | A simple VoIP corporate directory enumeration tool | http://ucsniff.sourceforge.net/ace.html | GPLv3orlater | |
| ACL2 | Programming language for modelling computer systems and proving properties of those models | http://www.cs.utexas.edu/users/moore/acl2/ | | |
| ACal | Simple Web-based calendar | http://acalproj.sourceforge.net/ | GPLv2 | |
| AClock | Analog dockapp clock for GNUstep | http://gap.nongnu.org/aclock/ | GPLv2orlater | |
| ADG | A library focused on automating the drawing of mechanical parts. | http://adg.entidi.com/ | LGPLv2.1 | |
| ADL | Application Database Load balancing class for MySQL | https://github.com/adlproject/ADL | GPLv3orlater | |
| ADM | Integrates the desktop and the Asterisk phone system | http://adm.hamnett.org/ | GPLv2orlater | |
| ADOdb | a database abstraction library for PHP. | http://adodb.sourceforge.net/ | BSD 3Clause
LGPLv2.1 | |
| ADOdb Lite | A small, fast replacement for ADODB. | http://adodblite.sourceforge.net/ | BSD 3Clause
LGPLv2.1 | |
| ADOdb for Python | a database abstraction library for Python. | http://phplens.com/lens/adodb/adodb-py-docs.htm | BSD 3Clause | |
| ADX | Minimalistic address book in your web browser | http://adx.elektronengehirn.net/ | BSD 3Clause | |
| ADempiere BR | World Class ERP/CRM/SCM/BI System | http://web.archive.org/web/20160126150945/http://antigo.softwarepublico.gov.br/5cqualibr/avaliaspb/wiki/fichaADempiereBR | GPLv2 | |
| AE-DIR | Authorized Entities Directory -- The agile IAM for DevOps | https://www.ae-dir.com | Apache2.0 | |
| AEIOU | AEIOU (An Electronic IOU) is a web application for creating local commodity currencies based on electronic IOU tickets. | http://aeiou.sourceforge.net/ | BSD 2Clause
AGPLv3orlater | |
| AElhometta | Archaic attempt at autonomous non-sandboxed distributed artificial life of assembler automaton type | https://github.com/aelhometta/aelhometta | GPLv3orlater | |
| AFD | Automatically distribute files | http://www.dwd.de/AFD/ | GPLv2 | |
| AFFLIBv3 | Advanced Forensics Format Library (debug version) | https://github.com/sshock/AFFLIBv3 | ISC
Other
BSD 3Clause
GPLv3orlater
LGPLv3 | |
| AFR | X-Chat plugin | https://sourceforge.net/projects/afr/ | GPLv2orlater | |
| AFT | Document preparation system | http://www.maplefish.com/todd/aft.html | Perl | |
| AFileDialog | An Android library which implements a simple and easy to use file chooser. | https://github.com/jfmdev/aFileDialog/ | LGPLv3orlater | |
| AGFL | a parser generator for natural languages. | https://nlnet.nl/project/agfl/description.html | GPLv2orlater
LGPLv2.1orlater | |
| AGT | Frontend for iptables | http://sourceforge.net/projects/agt | BSD 3Clause | |
| AIDE | Intrusion detection system | http://www.cs.tut.fi/~rammer/aide.html | GPLv2orlater | |
| AIM Sniff | A network sniffer for AIM and MSN messages. | https://sourceforge.net/projects/aimsniff/ | GPLv2orlater | |
| AITALC | Performs automated perturbative loop calculations of cross sections in high energy physics | http://www-zeuthen.desy.de/theory/aitalc | GPLv2orlater | |
| AJAX Book Reader | A Web application for displaying large texts one page at a time. | http://michaelthompson.org/books/ | GPLv2 | |
| AJAX Chat | a free and fully customizable web chat software. | http://frug.github.io/AJAX-Chat/ | Expat
AGPLv3orlater
Creative Commons Attribution Share-Alike 2.5 | |
| AKFAvatar | make word bubbles for avatars | http://akfavatar.nongnu.org/ | GPLv3orlater | |
| ALBERTA | adaptive finite element library (library) | http://www.alberta-fem.de/ | Other
GPLv2orlater | |
| ALE | Combines multiple images into one | http://web.archive.org/web/20111227060740/http://auricle.dyndns.org/ALE/ | GPLv2orlater | |
| ALSA | ALSA driver configuration files | http://www.alsa-project.org/ | GPLv3orlater | |
| ALSA Midi Kommander | a DCOP interface | http://kmetronome.sourceforge.net/kaseq/ | GPLv2orlater | |
| ALSA OSS | OSS compatibility library for the Advanced Linux Sound Architecture (ALSA). | http://www.alsa-project.org/main/index.php/Main Page | GPLv2orlater | |
| ALSA Patch Bay | a graphical patch bay for the ALSA sequencer API and the JACK audio API. | http://pkl.net/~node/software/alsa-patch-bay/ | GPLv2orlater | |
| ALSA driver | driver for the Advanced Linux Sound Architecture (ALSA). | http://www.alsa-project.org/main/index.php/Main Page | GPLv2orlater
BSD 2Clause | |
| ALSA library | library for for the Advanced Linux Sound Architecture (ALSA). | http://www.alsa-project.org/main/index.php/Main Page | GPLv2orlater
LGPLv2.1orlater | |
| ALSA plugins | plugins for the Advanced Linux Sound Architecture (ALSA). | http://www.alsa-project.org/main/index.php/Main Page | GPLv2orlater
BSD 3Clause
LGPLv2.1 | |
| ALSA tools | tools for the Advanced Linux Sound Architecture (ALSA). | http://www.alsa-project.org/main/index.php/Main Page | GPLv2orlater
LGPLv2.1orlater | |
| ALSA utilities | utilities for the Advanced Linux Sound Architecture (ALSA). | http://www.alsa-project.org/main/index.php/Main Page | GPLv2orlater | |
| ALURE - AL Utilities REtooled | AL Utilities REtooled (documentation) | http://kcat.strangesoft.net/alure.html | Expat | |
| AMB-Plugins | ambisonics LADPSA plugins | http://kokkinizita.linuxaudio.org/linuxaudio/index.html | Other
GPLv2orlater | |
| AMORE | GNU R: A MORE flexible neural network package | https://cran.r-project.org/web/packages/AMORE | GPLv2orlater | |
| AMPSharp | Asynchronous Messaging Protocol library for the CLI. | http://amp-protocol.net/AmpSharp | Expat | |
| AMQP Protocol | specs for the Advanced Message Queuing Protocol (AMQP) | http://www.amqp.org/ | BSD 3Clause | |
| AMaViS-ng | Searches attachments and archives for malicious code | http://www.sourceforge.net/projects/amavis | GPLv2 | |
| AMule | All-platform port of eMule | http://www.amule.org/ | GPLv2orlater | |
| ANDREW's Not a DVD Ripping and Encoding Wizard | an interactive command-line interface that simplifies the use of some application to create AVI, Matroska or OGM files from DVDs. | http://tobemem.memebot.com/ | GPLv3orlater | |
| ANGRYsearch | A file searcher that provides instant results as you type | https://github.com/dotheevo/angrysearch/ | GPLv2 | |
| ANK djbdns | Web interface for 'djbdns' | http://www.nattis.com/dns/ | SimplePermissiveNoNonWarranty | |
| AOLserver | Web server | http://aolserver.sourceforge.net/ | GPL
MPL | |
| AOP Alliance | library for interoperability for Java AOP implementations | http://aopalliance.sourceforge.net/ | PublicDomain
GPLv2 | |
| APAz | A PHP anonymizer. | http://apaz.labs.libre-entreprise.org/ | GPLv2orlater | |
| APCu | APC User Cache for PHP 5 (transitional package) | http://pecl.php.net/package/APCu | Other | |
| APE Tag Libraries | C, Clojure, Erlang, Lua, Python, Ruby Libraries for reading/writing APEv2 tags. | http://github.com/jeremyevans/ape tag libs | Expat | |
| API Sanity Checker | automatic generator of basic unit tests for a C/C++ library API. | https://github.com/lvc/api-sanity-checker | GPLv2 | |
| API accessor for gravatar.com | API accessor for gravatar.com | http://www.horde.org/ | Other | |
| APK Editor Studio | Powerful yet easy-to-use APK editor | https://qwertycube.com/apk-editor-studio/ | | |
| APNG Assembler | assemble APNG animation from PNG/TGA image sequence | https://sourceforge.net/projects/apngasm | Other | |
| APNG Optimizer | optimize APNG animated images | http://apng.sourceforge.net | Other | |
| APQ | Ada95 Database Library | http://web.archive.org/web/20110609012236/http://framework.kow.com.br/ | Other
GPLv2orlater | |
| APQ PostgreSQL | PostgreSQL impementation for the APQ database bindings | http://web.archive.org/web/20110609012236/http://framework.kow.com.br/ | Other
GPLv2orlater | |
| APSR | TCP/IP packet sender to test firewalls and other network applications | http://www.aa-security.de/ | GPLv2 | |
| APScheduler | In-process task scheduler with Cron-like capabilities | https://pypi.org/project/APScheduler | Other | |
| APacheDEX | Compute APDEX from Apache-style logs | http://git.erp5.org/gitweb/apachedex.git | GPLv2orlater
Expat | |
| ARChon Packager | ARChon Packager (formerly Chrome APK Packager) is a convenient way to produce Chrome ARChon Custom Runtime packages directly from your phone. | https://github.com/bpear96/ARChon-Packager | GPLv3orlater | |
| ARChon Runtime for Chrome | Run Android Apps in Chrome in OS X, GNU/Linux and Windows | https://archon-runtime.github.io/ | | |
| ARDEN | specificity control for read alignments using an artificial reference | http://sourceforge.net/projects/arden/ | Other | |
| ARandR | Simple visual front end for XRandR | http://christian.amsuess.com/tools/arandr/ | GPLv3orlater | |
| ARts | Framework for developing modular multimedia applications | https://web.archive.org/web/20060106015222/http://www.arts-project.org/ | LGPLv2orlater | |
| ASCEND | A flexible modelling environment for hard engineering and science problems. | http://ascend.cheme.cmu.edu/ | GPLv2 | |
| ASEPRITE | sprite and pixel art editor | http://www.aseprite.org/ | Zlib
Other
GPLv2orlater
BSD 3Clause | |
| ASIS | Ada Semantic Interface Specification | http://docs.adacore.com/asis-docs/html/asis ug/asis ug/introduction.html#introduction | GPLv3orlater | |
| ASN.1 Compiler | ASN.1 compiler for C | http://asn1c.sourceforge.net | GPLv2orlater
BSD 2Clause | |
| ASPSeek | Search engine | http://www.aspseek.org/ | GPLv2orlater | |
| AST | Handle World Coordinate Systems in Astronomy (main shared lib) | http://www.starlink.ac.uk/ast | PublicDomain
Other | |
| AT Emulator | Emulate a communication device, like a modem | https://www.celersms.com/at-emulator.htm | | |
| AT1 | JACK autotuner | http://kokkinizita.linuxaudio.org/linuxaudio/ | GPLv2orlater | |
| ATC-pie | Air traffic control simulation (solo and multi-player) | https://sourceforge.net/projects/atc-pie | GPLv3 | |
| ATK | The Gnome accessibility toolkit | https://developer.gnome.org/atk/ | LGPLv2orlater | |
| ATLAS | Generates high-performance mathematical libraries | http://math-atlas.sourceforge.net/ | BSD 3Clause | |
| ATM SAR Library (SARLib) | ATM Segmentation and Reassembly Library. | http://sarlib.sourceforge.net/ | GPLv2orlater | |
| ATOS | Manage projects, generate invoices, and estimate your taxes | https://github.com/jbelelieu/atos | AGPL-3.0 | |
| ATSLog | A web-oriented interface for collecting, viewing and analysing calls for various types of PBXs. | https://sourceforge.net/projects/atslog.berlios/ | GPLv2orlater | |
| AUnit | AUnit, a unit testing framework for Ada: documentation | http://libre.adacore.com/libre/ | GPLv3orlater | |
| AVFS | Lets programs look at archived files without having to recompile them | http://www.inf.bme.hu/~mszeredi/avfs/avfs.html | GPLv2 | |
| AVInfo | Displays audio/video header information | http://shounen.ru/soft/avinfo/ | GPLv2orlater | |
| AVRA | assembler for Atmel AVR microcontrollers | http://avra.sourceforge.net | Other
GPLv2orlater | |
| AVbin | a thin wrapper around FFmpeg. | https://avbin.github.io/AVbin/Home/Home.html | GPLv2orlater
LGPLv3orlater | |
| AVideo | A powerful, 100% libre video and audio downloader for GNU/Linux | https://notabug.org/GPast/avideo | GPLv3orlater | |
| AWF | Web framework for a CMS/portal/online group | http://web.archive.org/web/20120917065920/http://www.awf-cms.org/ | GPLv2orlater | |
| AWOL | In/out board | http://sourceforge.net/projects/awol/ | GPLv2 | |
| AWS SDK for PHP | software development kit to build solutions for Amazon | http://aws.amazon.com/sdkforphp/ | Other
Expat | |
| AWStats | Generates and displays Web server statistics graphically | http://awstats.sourceforge.net/ | GPLv2orlater | |
| AZR3 | drawbar organ simulator | http://ll-plugins.nongnu.org/azr3/ | GPLv2 | |
| Aac-tactics | Coq tactics for reasoning modulo AC (theories) | http://sardes.inrialpes.fr/~braibant/aac tactics/ | LGPLv3 | |
| Aafigure | ASCII art to image converter. | https://launchpad.net/aafigure | BSD 3Clause | |
| Aalib | ASCII art library | http://aa-project.sourceforge.net/aalib/ | LGPL | |
| Aap | The Aap program executes recipes. It is a kind of super-make program. | http://www.a-a-p.org/ | ISC
Expat
GPLv2 | |
| Aardvark Shellutils | Three utilities to make working with shell scripts easier | http://www.laffeycomputer.com/shellutils.html | GPLv2orlater | |
| Aasm | Advanced assembler. | https://savannah.nongnu.org/projects/aasm/ | GPLv3orlater | |
| AbGate | LV2 noise gate plugin | http://abgate.sourceforge.net | Other
LGPLv3 | |
| Abacas | Algorithm Based Automatic Contiguation of Assembled Sequences | http://abacas.sourceforge.net/ | GPLv2orlater | |
| AbanteCart - Open Source Ecommerce Solution | AbanteCart is a free software shopping cart or ecommerce platform for small to medium size business. It is designed, built and supported by experienced enthusiasts that are passionate about their work and contribution to the rapidly evolving eCommerce industry. AbanteCart is powered with a robust and expandable core platform, state of the art feature set and a efficient user interface. | http://www.abantecart.com | | |
| Abbrev | Get unique abbreviations for a set of strings - Node.js module | https://github.com/isaacs/abbrev-js | Expat | |
| Abbrev-js | Like ruby abbrev module, but for Node.js | https://github.com/isaacs/abbrev-js | Expat | |
| Abc2ps | Typesetting program for ABC format | http://www.ihp-ffo.de/~msm/ | GPLv2orlater | |
| Abcde | Rips, encodes, and tags CDs with one command | http://code.google.com/p/abcde/ | Perl | |
| Abclock | Analog bitmap clock | http://odur.let.rug.nl/~kleiweg/abclock/ | GPLv2orlater | |
| Abcm2ps | Converts music from ABC format to PostScript | http://moinejf.free.fr/ | GPLv2orlater | |
| Abcmidi | converter from ABC to MIDI format and back | http://ifdo.ca/~seymour/runabc/top.html | GPLv2orlater
Expat | |
| Abcpp | Preprocessor for ABC music files | http://abcplus.sourceforge.net/ | GPLv2orlater | |
| Abcsh | Shell for processing ABC music notation | https://www.gnu.org/software/abcsh/ | GPLv2orlater | |
| Abdabi | RDF-based web of information for discovery of business services of all kinds. | https://www.gnu.org/software/abdabi/ | GPLv2orlater | |
| Abelujo | Free software for bookstores | http://abelujo.cc/en/ | AGPL-3.0-or-later | |
| AbiWord | Word processor from the AbiSource Project desktop suite | http://www.abisource.com/ | GPLv2orlater | |
| Abiword | efficient, featureful word processor with collaboration | http://www.abisource.com/ | Other
GPLv2orlater
BSD 2Clause
GPLv2
LGPLv2orlater
GPLv3orlater
LGPLv2 | |
| Abook | Addressbook program | http://abook.sourceforge.net/ | GPLv2 | |
| Aboot | base files required for bootable media on Linux/Alpha | https://tracker.debian.org/pkg/aboot | Other
GPLv2orlater | |
| Abraca | Simple and powerful graphical client for XMMS2 | http://abraca.github.com/Abraca/ | ISC
Other
GPLv2orlater | |
| Absence | Calendar for keeping track of people | http://www.unix-wissen.de/absence/ | GPLv3orlater | |
| Absolut Engine | Advanced news/content publishing system | http://www.absolutengine.com | GPLv2 | |
| Abstract-deque | abstract, parameterized interface to mutable Deques; documentation | http://hackage.haskell.org/package/abstract-deque | BSD 3Clause | |
| Abstract-leveldown | Abstract prototype matching the LevelDOWN API - Node.js module | https://github.com/rvagg/node-abstract-leveldown | Expat | |
| Abstract-par | Abstract parallelization interface; documentation | http://hackage.haskell.org/package/abstract-par | BSD 3Clause | |
| Abuse | Shoot-'em-up game | http://abuse.zoy.org/ | Other
GPLv2orlater
WTFPLv2 | |
| Academic Teaching Planner | A free software to manage academic courses | https://sites.google.com/view/academic-teaching-planner | GPLv3orlater | |
| Acccheck | Password dictionary attack tool for SMB | https://labs.portcullis.co.uk/tools/acccheck/ | GPLv2orlater | |
| Accepts | higher-level content negotiation for Node.js | https://github.com/jshttp/accepts | Expat | |
| Accerciser | a next generation at-poke tool. | http://live.gnome.org/Accerciser | BSD 3Clause | |
| Access user Class | Easy to use PHP class to protect pages and register new users | http://www.finalwebsites.com/snippets.php?id=10 | BSD 3Clause | |
| AccountsService | query and manipulate user account information | http://cgit.freedesktop.org/accountsservice/ | GPLv2orlater
GPLv3orlater | |
| Acct | System accounting utilities. | https://www.gnu.org/software/acct/ | X11
SimplePermissiveNoNonWarranty
SimplePermissiveNonWarranty
Other
GPLv2orlater with exception
GPLv2orlater
GPLv3orlater
GPLv3orlater with exception | [[File:Heckert_gnu.small.png|30px]] |
| Ace-of-penguins | penguin-themed solitaire games | http://freshmeat.net/projects/theaceofpenguins | GPLv2orlater
LGPLv2orlater | |
| AcePerl | Object-Oriented Access to ACEDB Databases | https://metacpan.org/release/AcePerl | Other
LGPLv2orlater | |
| Acedb | retrieval of DNA or protein sequences | http://www.acedb.org/ | Other
GPLv2orlater
GPLv3 | |
| Acegi Security | Acegi Security System for Spring | http://acegisecurity.org/ | Other | |
| AcetoneISO | feature-rich application to mount and manage CD and DVD images | https://sourceforge.net/projects/acetoneiso/ | Other
GPLv3orlater | |
| Achievo | Web-based project management and tracking tool | https://github.com/atkphpframework/achievo | GPLv2 | |
| Achievo ATK | Web application development framework | https://github.com/Sintattica/atk | GPLv3 | |
| Achoz | organize all of your own world data | http://ahoxus.org/achoz | | |
| Acid-state | Haskell database library with ACID guarantees - GHC libraries | http://hackage.haskell.org/package/acid-state | PublicDomain
GPLv2orlater | |
| Ack | grep-like program specifically for large source trees | https://beyondgrep.com/ | Other
GPLv2orlater
GPLv2 | |
| Acm | Aerial combat simulation game. | https://www.gnu.org/software/acm/ | GPLv2orlater
GPLv3orlater | [[File:Heckert_gnu.small.png|30px]] |
| Acme | Provides support for special keys on laptops | http://www.hadess.net/misc-code.php3 | GPLv2orlater | |
| Acme-Bleach | Perl module for really clean programs | https://metacpan.org/release/Acme-Bleach | Other | |
| Acme-Damn | Perl module to unbless objects | https://metacpan.org/release/Acme-Damn | Other | |
| Acme-EyeDrops | funny way for visual programming in Perl | https://metacpan.org/release/Acme-EyeDrops | Other | |
| Acme-POE-Knee | Time sliced pony race using the POE event loop | https://metacpan.org/release/Acme-POE-Knee | Other | |
| Acme-constant | module that makes inconstant constants, except actually not | https://metacpan.org/release/Acme-constant | Expat | |
| Acmemail | Multiuser IMAP/POP3 to Web gateway MUA | http://acmemail.sourceforge.net/ | | |
| Acon | Displays Arabic text | http://members.tripod.com/ahmedahamid/arabic/arabic.html | GPLv2 | |
| AcoustID fingerprinter | Acoustid fingerprinter | http://wiki.acoustid.org/wiki/Fingerprinter | Other
GPLv2orlater | |
| Acovea | Compiler optimization tool | https://github.com/Acovea/libacovea | GPLv2 | |
| Acpi call | Kernel module that enables you to call ACPI methods | https://github.com/mkottman/acpi call | GPLv3orlater | |
| AcpiTool | A versatile command line ACPI client for GNU/Linux. | http://freeunix.dyndns.org:8000/site2/acpitool.shtml | GPLv2orlater | |
| Acsccid | PC/SC driver for ACS USB CCID smart card readers | http://acsccid.sourceforge.net/ | ISC
Other
LGPLv2orlater
GPLv3 | |
| Actdiag | generate activity-diagram image file from spec-text file | http://blockdiag.com/ | Other | |
| ActiViz.NET | ActiViz.NET documentation | http://www.kitware.com/products/avdownload.php | Other | |
| Actim | Provides the ability to transfer files and execute commands via e-mail. | http://exom.sourceforge.net | GPLv2orlater | |
| Action Mailer | a framework for designing email-service layers. | http://rubyforge.org/projects/actionmailer/ | Expat | |
| Action Query | jQuery and ActiveRecord, sitting in a tree... | http://github.com/nakajima/action-query | Expat | |
| Actionpack-action caching | action caching for Action Pack | https://github.com/rails/actionpack-action caching | Expat | |
| Activation | JavaBeans™ Activation Framework | https://www.gnu.org/software/classpathx/jaf/ | GPLv3 | |
| Active | Free groupware | http://www.active.org.au/doc/ | GPLv2 | |
| Active Calendar | Generates calendars as HTML tables | https://github.com/joechrysler/calendar/tree/master/Examples/activecalendar | LGPL | |
| Active Resources | provides a coherent wrapper object-relational mapping for REST web services. | http://code.google.com/p/pyactiveresource/ | Expat | |
| Active Spam Killer | Spam filter | http://www.paganini.net/ask/ | GPLv2orlater | |
| Active-x-obfuscator | Safely obfuscate the string 'ActiveX' inside of JavaScript code | https://github.com/felixge/node-active-x-obfuscator | Expat | |
| ActiveMQ ActiveIO | ActiveMQ ActiveIO protocol implementation framework | http://activemq.apache.org/ | Other | |
| ActiveMQ Protocol Buffers Plugin | ActiveMQ Protocol Buffers Maven plugin | http://activemq.apache.org/ | Other | |
| Activeldap | ActiveLdap is a object-oriented API to LDAP | https://rubygems.org/gems/activeldap | Other
GPLv2orlater | |
| Activerecord-deprecated finders | deprecated finder APIs extracted from Rails Active Record. | https://github.com/rails/activerecord-deprecated finders | Other | |
| Activity-log-manager | blacklist configuration user interface for Zeitgeist | https://launchpad.net/history-manager | GPLv2orlater | |
| Actor platform | multiplatform text, photo and voice message server | https://github.com/actorapp/actor-platform | AGPLv3 | |
| Acts as Audited | an ActiveRecord extension that logs all changes to your models in an audits table. | http://github.com/collectiveidea/acts as audited | Expat | |
| Acts as api | makes creating XML/JSON responses in Rails 3 easy and fun | https://github.com/fabrik42/acts as api | Expat | |
| Acts as fu | When you need a dash of ActiveRecord and nothing more. | http://github.com/nakajima/acts as fu | Expat | |
| Acts-as-taggable-on | provides advanced tagging for Rails | https://github.com/mbleigh/acts-as-taggable-on | Expat | |
| Ad-hoc Support Library | a user-space library which provides an API to faciliate implementation of routing protocols for wireless ad-hoc networks in GNU/Linux. | http://aslib.sourceforge.net/ | X11
GPLv2 | |
| AdPlug | free AdLib sound library (utils) | http://adplug.sourceforge.net/ | Other
LGPLv2orlater
GPLv3orlater | |
| Ada Components | Toolset for Ada | http://lglwww.epfl.ch/Team/MW/mw components.html | GPLv2 | |
| Ada Motif binding library | Binding to X Windows and OSF/Motif for the Ada programming language | http://home.arcor.de/hfvogt/programming.html | GPLv2orlater | |
| Ada Web Server | Ada Web Server documentation | https://libre.adacore.com/libre | BSD 3Clause
Expat
GPLv3orlater | |
| AdaControl | Ada rules controller | http://www.adalog.fr/en/adacontrol.html | Other
GPLv2orlater | |
| AdaCurses | Ada binding to the ncurses text interface library: shared library | https://invisible-island.net/ncurses/ncurses-Ada95.html | X11 | |
| AdaDoc | Documentation tool for Ada | http://adadoc.sourceforge.net/ | GPLv2 | |
| AdaGate | combination of Sokoban and Portal | https://sourceforge.net/projects/adagate/ | GPLv3orlater | |
| AdaSockets | Allows for use of sockets in Ada95 | http://www.rfc1149.net/devel/adasockets.html.en | GPLv2orlater with exception | |
| AdaUnits | Implementation of dimensioned values for Ada | http://www.dmitry-kazakov.de/ada/units.htm | GPLv2orlater with exception | |
| AdaVenture | AdaVenture is a kid-friendly retro point & click adventure game written in Ada. | https://sourceforge.net/projects/adaventure/ | GPLv3 | |
| AdacURL | Ada95 binding to the 'cURL' library | http://web.archive.org/web/20070403105909/http://www.almroth.com/adacurl/index.html | GPLv2orlater with exception | |
| Adaptive Sampling Kit | Adaptive Sampling Kit for big experimental spaces | https://code.google.com/p/adaptive-sampling-kit/ | Other
Expat
GPLv2 | |
| Adblock Plus | Ad blocker | https://adblockplus.org/ | GPLv3 | |
| Adcd | Small CD player for GNU/Linux. | https://www.nongnu.org/adcd/ | GPLv2orlater | |
| Add custom search engine | Add a custom search engine to the list of available search engines in the search bar and URL bar. | https://github.com/evilpie/add-custom-search-engine | | |
| Addendat | Blogging program that can be updated from either a CGI or shell interface | http://deekoo.net/technocracy/addendat/ | GPLv2 | |
| Addressable | alternative URI implementation for Ruby | https://rubygems.org/gems/addressable | Other
GPLv2orlater | |
| Adequate | Debian package quality testing tool | http://jwilk.net/software/adequate | Expat | |
| Adhoc | M4 macros to generate general-purpose portable shell scripts. | https://savannah.gnu.org/projects/adhoc/ | GPLv3orlater
GPLv3orlater with exception | |
| Adie | Programmer's text editor | http://www.fox-toolkit.org/adie.html | LGPL | |
| Adjtimex | Displays or sets the kernel time variable | http://www.ibiblio.org/linsearch/lsms/adjtimex.html | GPLv2 | |
| Adlint | Source code static analyzer | http://adlint.sourceforge.net/ | GPLv3orlater | |
| Admesh | Tool for processing triangulated solid meshes | https://launchpad.net/admesh/ | GPLv2orlater | |
| Adminer | Web-based database administration tool | http://www.adminer.org/ | Other | |
| Adns | Asynchronous DNS client library and utilities. | https://www.gnu.org/software/adns/ | GPLv3orlater | [[File:Heckert_gnu.small.png|30px]] |
| Adtool | Utility for Active Directory administration | http://gp2x.org/adtool/ | GPLv2orlater | |
| Advance | Personal information management (PIM) system | http://sourceforge.net/projects/advance/ | GPLv2 | |
