This is a list of free and open-source software packages, computer software licensed under free software licenses and open-source licenses. Software that fits the Free Software Definition may be more appropriately called free software; the GNU project in particular objects to their works being referred to as open-source.^[1] For more information about the philosophical background for open-source software, see free software movement and Open Source Initiative. However, nearly all software meeting the Free Software Definition also meets the Open Source Definition and vice versa. A small fraction of the software that meets either definition is listed here.

Some of the open-source applications are also the basis of commercial products, shown in the List of commercial open-source applications and services.

Artificial intelligence[edit]

General[edit]

• OpenCog – A project that aims to build an artificial general intelligence (AGI) framework. OpenCog Prime is a specific set of interacting components designed to give rise to human-equivalent artificial general intelligence.

Computer Vision[edit]

• AForge.NET – Computer Vision, Artificial Intelligence and Robotics library for the .NET Framework
• OpenCV – Computer Vision Library in C++

Machine Learning[edit]

• See List of open-source machine learning software
• See Data Mining below
• See R programming language – packages of statistical learning and analysis tools

Planning[edit]

• TREX – Reactive planning

Robotics[edit]

• ROS – Robot Operating System
• YARP – Yet Another Robot Platform

Assistive technology[edit]

Speech (synthesis and recognition)[edit]

• CMU Sphinx – Speech recognition software from Carnegie Mellon University
• Emacspeak – Audio desktop
• ESpeak – Compact software speech synthesizer for English and other languages
• Festival Speech Synthesis System – General multilingual speech synthesis
• Modular Audio Recognition Framework – Voice, audio, speech NLP processing
• NonVisual Desktop Access – (NVDA) Screen reader, for Windows
• Text2Speech – Lightweight, easy-to-use Text-To-Speech (TTS) Software

Other assistive technology[edit]

• Dasher – Unique text input software
• Gnopernicus – AT suite for GNOME 2
• Virtual Magnifying Glass - A multi-platform screen magnification tool

CAD[edit]

• FreeCAD – Parametric 3D CAD modeler with a focus on mechanical engineering, BIM, and product design
• LibreCAD – 2D CAD software using AutoCAD-like interface and file format

Electronic design automation (EDA)[edit]

• Fritzing
• KiCad

Computer simulation[edit]

• Blender – 3D computer graphics software toolset used for creating animated films, visual effects, art, 3D printed models, motion graphics, interactive 3D applications, and computer games.
• FlightGear – Multi-platform flight simulator
• SimPy – Queue-theoretic event-based simulator written in Python

Cybersecurity[edit]

Antivirus[edit]

• ClamAV
• ClamWin
• Gateway Anti-Virus
• Lynis

Data loss prevention[edit]

• MyDLP

Data recovery[edit]

• dvdisaster
• Foremost
• PhotoRec
• TestDisk

Forensics[edit]

• The Coroner's Toolkit
• The Sleuth Kit

Anti-forensics[edit]

• USBKill

Disk erasing[edit]

• DBAN
• srm

Encryption[edit]

• AES
• GnuPG
• GnuTLS
• KGPG
• NaCl
• OpenSSL
• Seahorse
• Signal
• stunnel
• TextSecure
• wolfCrypt

Disk encryption[edit]

• CrossCrypt
• FreeOTFE and FreeOTFE Explorer
• eCryptfs

Firewall[edit]

• Coyote Linux
• Firestarter
• IPFilter
• ipfw
• iptables
• M0n0wall
• PeerGuardian
• PF
• pfSense
• Rope
• Shorewall
• SmoothWall
• Vyatta

Network and security monitoring[edit]

• Snort – Network intrusion detection system (IDS) and intrusion prevention system (IPS)
• OpenVAS – software framework of several services and tools offering vulnerability scanning and vulnerability management

Secure Shell (SSH)[edit]

• Cyberduck – macOS and Windows client (since version 4.0)
• Lsh – Server and client, with support for SRP and Kerberos authentication
• OpenSSH – Client and server
• PuTTY – Client-only

Password management[edit]

• Bitwarden
• KeePass
• Password Safe
• Mitro

Other cybersecurity programs[edit]

Data storage and management[edit]

Backup software[edit]

Database management systems (including administration)[edit]

Data mining[edit]

• Environment for DeveLoping KDD-Applications Supported by Index-Structures (ELKI) – Data mining software framework written in Java with a focus on clustering and outlier detection methods
• FrontlineSMS – Information distribution and collecting via text messaging (SMS)
• Konstanz Information Miner (KNIME)
• OpenNN – Open-source neural networks software library written in the C++ programming language
• Orange (software) – Data visualization and data mining for novice and experts, through visual programming or Python scripting. Extensions for bioinformatics and text mining
• RapidMiner – Data mining software written in Java, fully integrating Weka, featuring 350+ operators for preprocessing, machine learning, visualization, etc. – the previous version is available as open-source
• Scriptella ETL – ETL (Extract-Transform-Load) and script execution tool. Supports integration with J2EE and Spring. Provides connectors to CSV, LDAP, XML, JDBC/ODBC, and other data sources
• Weka – Data mining software written in Java featuring machine learning operators for classification, regression, and clustering
• JasperSoft – Data mining with programmable abstraction layer

Data Visualization Components[edit]

• ParaView – Plotting and visualization functions developed by Sandia National Laboratory; capable of massively parallel flow visualization utilizing multiple computer processors
• VTK – Toolkit for 3D computer graphics, image processing, and visualisation.

Digital Asset Management software system[edit]

Disk partitioning software[edit]

Enterprise search engines[edit]

• ApexKB, formerly known as Jumper
• Lucene
• Nutch
• Solr
• Xapian
• Elasticsearch

ETLs (Extract Transform Load)[edit]

• Konstanz Information Miner (KNIME)
• Pentaho

File archivers[edit]

File Systems[edit]

• OpenAFS – Distributed file system supporting a very wide variety of operating systems
• Tahoe-LAFS – Distributed file system/Cloud storage system with integrated privacy and security features
• CephFS – Distributed file system included in the Ceph storage platform.

Desktop publishing[edit]

• Scribus - Designed for layout, typesetting, and preparation of files for professional-quality image-setting equipment. It can also create animated and interactive PDF presentations and forms.

E-book management and editing[edit]

• Calibre – Cross-platform suite of e-book software
• Sigil – Editing software for e-books in the EPUB format

Educational[edit]

Educational suites[edit]

• ATutor – Web-based Learning Content Management System (LCMS)
• Chamilo – Web-based e-learning and content management system
• Claroline – Collaborative Learning Management System
• DoceboLMS – SAAS/cloud platform for learning
• eFront – Icon-based learning management system
• FlightPath – Academic advising software for universities
• GCompris – Educational entertainment, aimed at children aged 2–10
• Gnaural – Brainwave entrainment software
• H5P – Framework for creating and sharing interactive HTML5 content
• IUP Portfolio – Educational platform for Swedish schools
• ILIAS – Web-based learning management system (LMS)
• Moodle – Free and open-source learning management system
• OLAT – Web-based Learning Content Management System
• Omeka – Content management system for online digital collections
• openSIS – Web-based Student Information and School Management system
• Sakai Project – Web-based learning management system
• SWAD – Web-based learning management system
• Tux Paint – Painting application for 3–12 year olds
• UberStudent – Linux based operating system and software suite for academic studies

Geography[edit]

• KGeography – Educational game teaching geography

Learning support[edit]

Language[edit]

• Kiten

Typing[edit]

• KTouch – Touch typing lessons with a variety of keyboard layouts
• Tux Typing – Typing tutor for children, featuring two games to improve typing speed

File managers[edit]

Finance[edit]

Accounting[edit]

• GnuCash – Double-entry book-keeping
• HomeBank – Personal accounting software
• KMyMoney – Double-entry book-keeping
• LedgerSMB – Double-entry book-keeping
• RCA open-source application – management accounting application
• SQL Ledger – Double-entry book-keeping
• TurboCASH – Double-entry book-keeping for Windows
• Wave Accounting – Double-entry book-keeping

Cryptocurrency[edit]

• Bitcoin Core – Peer-to-peer decentralised digital currency
• EOS.IO – Blockchain platform, peer-to-peer decentralised digital currency

CRM[edit]

• CiviCRM – Constituent Relationship Management software aimed at NGOs
• iDempiere – Business Suite, ERP and CRM
• SugarCRM – Commercial Customer Relationship Management

ERP[edit]

• Adempiere – Enterprise resource planning (ERP) business suite
• Compiere – ERP solution automates accounting, supply chain, inventory, and sales orders
• Dolibarr – Web-based ERP system
• ERPNext – Web-based open-source ERP system for managing accounting and finance
• Ino erp – Dynamic pull based system ERP
• JFire – An ERP business suite written with Java and JDO
• metasfresh – ERP Software
• Odoo – Open-source ERP, CRM and CMS
• Openbravo - Web-based ERP
• Tryton - Open-source ERP

Human resources[edit]

• OrangeHRM – Commercial human resource management

Microfinance[edit]

• Cyclos – Software for microfinance institutions, complementary currency systems and timebanks
• Mifos – Microfinance Institution management software

Process management[edit]

• Bonita Open Solution – Business Process Management

Trading[edit]

• jFin – Java-based trade-processing program
• QuickFIX – FIX protocol engine written in C++ with additional C#, Ruby, and Python wrappers
• QuickFIX/J – FIX protocol engine written in Java

Games[edit]

Action[edit]

• Xonotic – First-person shooter that runs on a heavily modified version of the Quake engine known as the DarkPlaces engine
• Warsow – First-person shooter fast-paced arena FPS game that runs on the Qfusion engine

Application layer[edit]

• WINE – Allows Windows applications to be run on Unix-like operating systems

Emulation[edit]

• MAME – Multi-platform emulator designed to recreate the hardware of arcade game systems
• RetroArch – Cross-platform front-end for emulators, game engines and video games

Puzzle[edit]

• Pingus – Lemmings clone with penguins instead of lemmings

Simulation[edit]

• OpenTTD – Business simulation game in which players try to earn money via transporting passengers and freight by road, rail, water and air.
• SuperTuxKart – Kart racing game that features mascots of various open-source projects.

Strategy[edit]

• 0 A.D. – Real-time strategy video game
• Freeciv – Turn-based strategy game inspired by the proprietary Sid Meier's Civilization series.
• The Battle for Wesnoth – Turn-based strategy video game with a fantasy setting

Genealogy[edit]

• Gramps - a free and open source genealogy software.

Geographic information systems[edit]

• QGIS - cross-platform desktop geographic information system (GIS) application that supports viewing, editing, and analysis of geospatial data.

Graphical user interface[edit]

Desktop environments[edit]

Window managers[edit]

Windowing system[edit]

Groupware[edit]

Content management systems[edit]

Wiki software[edit]

Healthcare software[edit]

Hobby software[edit]

Homebrewing[edit]

• CyberBrau

Integrated Library Management Software[edit]

• Evergreen – Integrated Library System initially developed for the Georgia Public Library Service's PINES catalog
• Koha – SQL-based library management
• NewGenLib
• OpenBiblio
• PMB
• refbase – Web-based institutional repository and reference management software

Image editor[edit]

• Darktable – Digital image workflow management, including RAW photo processing
• digiKam – Integrated photography toolkit including editing capabilities
• GIMP – Raster graphics editor aimed at image retouching/editing
• Inkscape – Vector graphics editor
• Karbon – Scalable vector drawing application in KDE
• Krita – Digital painting and sketching application, with a variety of brush engines
• LightZone - Free, open-source digital photo editor software application.
• RawTherapee – Digital image workflow management aimed at RAW photo processing

Mathematics[edit]

Media[edit]

2D animation[edit]

• Pencil2D – Simple 2D graphics and animation program
• Pivot Animator – Application used to create stick figure and sprite animations
• Synfig – 2D vector graphics and timeline based animation
• TupiTube (formerly KTooN) – Application for the design and creation of animation
• OpenToonz – Part of a family of 2D animation software

3D animation[edit]

• Blender – Professional computer graphics software featuring modeling, sculpting, texturing, rigging, simulation, rendering, camera tracking, video editing, and compositing
• OpenFX – Modeling and animation software with a variety of built-in post processing effects
• Seamless3d – Node-driven 3D modeling software

Audio editors, audio management[edit]

CD/USB-writing software[edit]

Flash animation[edit]

• Pencil2D – For animations
• SWFTools – For scripting

Game Engines[edit]

• Godot – Application for the design of cross-platform videogames
• Stockfish – Universal Chess Interface chess engine

Graphics[edit]

Image galleries[edit]

Image viewers[edit]

• Eye of GNOME
• F-spot
• feh
• Geeqie
• Gthumb
• Gwenview
• Kphotoalbum
• Opticks

Multimedia codecs, containers, splitters[edit]

Television[edit]

Video converters[edit]

• Dr. DivX
• FFmpeg
• MEncoder
• OggConvert

Video editing[edit]

• Avidemux
• AviSynth
• Blender
• Cinelerra
• DScaler
• DVD Flick
• Flowblade
• Kaltura
• Kdenlive
• Kino
• LiVES
• Natron
• OpenShot
• Pitivi
• Shotcut
• VirtualDub
• VirtualDubMod
• VideoLAN Movie Creator

Video encoders[edit]

• Avidemux
• HandBrake
• FFmpeg

Video players[edit]

• Media Player Classic
• VLC media player

Other media packages[edit]

• Celtx – Media pre-production software
• Open Broadcaster Software (OBS) – Cross-platform streaming and recording program

Networking and Internet[edit]

Advertising[edit]

• Revive Adserver

Communication-related[edit]

• Asterisk – Telephony and VoIP server
• Ekiga – Video conferencing application for GNOME and Microsoft Windows
• ConferenceXP - video conferencing application for Windows XP or later
• FreePBX – Front-end and advanced PBX configuration for Asterisk
• FreeSWITCH – Telephony platform
• Jitsi – Java VoIP and Instant Messaging client
• QuteCom – Voice, video, and IM client application
• Enterprise Communications System sipXecs – SIP Communications Server
• Slrn – Newsreader
• Twinkle – VoIP softphone
• Ring – Cross-platform, peer to peer instant-messaging and video-calling protocol that offers end-to-end encryption and SIP client
• Tox – Cross-platform, peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption

E-mail[edit]

• Geary (software) – Email client based on WebKitGTK+
• Mozilla Thunderbird – Email, news, RSS, and chat client

File transfer[edit]

Grid and distributed processing[edit]

• GNU Queue
• HTCondor
• OpenLava
• pexec

Instant messaging[edit]

IRC Clients[edit]

Middleware[edit]

• Apache Axis2 – Web service framework (implementations are available in both Java & C)
• Apache Geronimo – Application server
• Bonita Open Solution – a J2EE web application and java BPMN2 compliant engine
• GlassFish – Application server
• Jakarta Tomcat – Servlet container and standalone webserver
• JBoss Application Server – Application server
• ObjectWeb JOnAS – Java Open Application Server, a J2EE application server
• TAO (software) – C++ implementation of the OMG's CORBA standard
• Enduro/X – C/C++ middleware platform based on X/Open group's XATMI and XA standards

RSS/Atom readers/aggregators[edit]

• Akregator – Platforms running KDE
• Liferea – Platforms running GNOME
• RSS Bandit – Windows, using .NET Framework
• RSSOwl – Windows, Mac OS X, Solaris, Linux using Java SWT Eclipse
• Sage (Mozilla Firefox extension)

Peer-to-peer file sharing[edit]

• Popcorn Time – Multi-platform, free, and open-source media player
• qBittorrent – Alternative to popular clients such as μTorrent

Portal Server[edit]

• Drupal
• Liferay
• Sun Java System Portal Server
• uPortal

Remote access and management[edit]

• FreeNX
• OpenVPN
• rdesktop
• Synergy
• VNC (RealVNC, TightVNC, UltraVNC)
• Remmina

Routing software[edit]

Web browsers[edit]

• Brave – web browser based on the Blink engine
• Chromium – Minimalist web browser from which Google Chrome draws its source code
• Falkon – web browser based on the Blink (web engine)|Blink engine
• Firefox – Mozilla-developed web browser using the Gecko layout engine
• Midori – Lightweight web browser using the WebKit layout engine
• Tor Browser – Modified Mozilla Firefox ESR web browser
• Waterfox – Alternative to Firefox (64-bit only)
• SeaMonkey – Internet suite

Webcam[edit]

• Cheese – GNOME webcam application
• Guvcview – Linux webcam application

Webgrabber[edit]

• cURL
• HTTrack
• Wget

Web-related[edit]

• Apache Cocoon – A web application framework
• Apache – The most popular web server
• AWStats – Log file parser and analyzer
• BookmarkSync – Tool for browsers
• Cherokee – Fast, feature-rich HTTP server
• curl-loader – Powerful HTTP/HTTPS/FTP/FTPS loading and testing tool
• FileZilla - FTP
• Hiawatha – Secure, high performance, and easy-to-configure HTTP server
• HTTP File Server – User-friendly file server software, with a drag-and-drop interface
• lighttpd – Resource-sparing, but also fast and full-featured, HTTP Server
• Lucee – CFML application server
• Nginx – Lightweight, high performance web server/reverse proxy and e-mail (IMAP/POP3) proxy
• NetKernel – Internet application server
• Qcodo – PHP5 framework
• Squid (software) – Web proxy cache
• Vaadin – Fast, Java-based framework for creating web applications
• Varnish (software) – High-performance web application accelerator/reverse proxy and load balancer/HTTP router
• XAMPP – Package of web applications including Apache and MariaDB
• Zope – Web application server

Web search engines[edit]

• Searx – Self-hostable metasearch engine
• YaCy – P2P-based search engine

Other networking programs[edit]

• JXplorer – LDAP client
• Nextcloud – A fork of ownCloud
• OpenLDAP – LDAP server
• ownCloud – File share and sync server
• Wireshark – Network monitor

Office suites[edit]

• Apache OpenOffice (formerly known as OpenOffice.org)
• Calligra Suite – The continuation of KOffice under a new name
• LibreOffice – Independent Work of OpenOffice.org with a number of enhancements
• ONLYOFFICE Desktop Editors – An open-source offline edition of the Cloud

Operating systems[edit]

Be advised that available distributions of these systems can contain, or offer to build and install, added software that is neither free software nor open-source.

Emulation and Virtualisation[edit]

• DOSBox – DOS programs emulator (including PC games)
• VirtualBox – hosted hypervisor for x86 virtualization

Personal information managers[edit]

• Chandler – Developed by the OSAF
• KAddressBook
• Kontact
• KOrganizer
• Mozilla Calendar – Mozilla-based, multi-platform calendar program
• Novell Evolution
• Perkeep - Personal data store for pictures
• Project.net – Commercial Project Management
• TeamLab – Platform for project management and collaboration

Programming language support[edit]

Bug trackers[edit]

• Bugzilla
• Mantis
• Mindquarry
• Redmine
• Trac

Code generators[edit]

• Bison
• CodeSynthesis XSD – XML Data Binding compiler for C++
• CodeSynthesis XSD/e – Validating XML parser/serializer and C++ XML Data Binding generator for mobile and embedded systems
• Flex lexical analyser – Generates lexical analyzers
• Kodos
• Open Scene Graph – 3D graphics application programming interface
• OpenSCDP – Open Smart Card Development Platform
• phpCodeGenie
• SableCC – Parser generator for Java and .NET
• SWIG – Simplified Wrapper and Interface Generator for several languages
• ^txt2regex$
• xmlbeansxx – XML Data Binding code generator for C++
• YAKINDU Statechart Tools – Statechart code generator for C++ and Java

Documentation generators[edit]

• Doxygen – Tool for writing software reference documentation. The documentation is written within code.
• Mkd – The software documentation is extracted from the sources files, from pseudocode or comments.
• Natural Docs – Claims to use a more natural language as input from the comments, hence its name.

Configuration software[edit]

• Autoconf
• Automake
• BuildAMation
• CMake

Debuggers (for testing and trouble-shooting)[edit]

• GNU Debugger – A portable debugger that runs on many Unix-like systems
• Memtest86 – Stress-tests RAM on x86 machines
• Xnee – Record and replay tests

Integrated development environments[edit]

Version control systems[edit]

Reference management software[edit]

Risk Management[edit]

• Active Agenda – Operational risk management and Rapid application development platform

Science[edit]

Bioinformatics[edit]

Cheminformatics[edit]

• Chemistry Development Kit
• JOELib
• OpenBabel

Electronic Lab Notebooks[edit]

• ELOG
• Jupyter

Geographic Information Systems[edit]

Geoscience[edit]

Grid computing[edit]

• P-GRADE Portal – Grid portal software enabling the creation, execution and monitoring of workflows through high-level Web interfaces

Microscope image processing[edit]

• CellProfiler – Automatic microscopic analysis, aimed at individuals lacking training in computer vision
• Endrov – Java-based plugin architecture designed to analyse complex spatio-temporal image data
• FIJI (software) – ImageJ-based image processing
• Ilastik – Image-classification and segmentation software
• ImageJ – Image processing application developed at the National Institutes of Health
• IMOD – 2D and 3D analysis of electron microscopy data
• ITK – Development framework used for creation of image segmentation and registration programs
• KNIME – Data analytics, reporting, and integration platform
• VTK – C++ toolkit for 3D computer graphics, image processing, and visualisation
• 3DSlicer – Medical image analysis and visualisation

Molecular dynamics[edit]

• GROMACS – Protein, lipid, and nucleic acid simulation
• LAMMPS – Molecular dynamics software
• MDynaMix – General-purpose molecular dynamics, simulating mixtures of molecules
• NAMD – Parallel efficient simulation of large systems involving millions of atoms
• NWChem – Quantum chemical and molecular dynamics software

Molecule viewer[edit]

• Avogadro – Plugin-extensible molecule visualisation
• BALLView – Molecular modeling and visualisation
• Jmol – 3D representation of molecules in a variety of formats, for use as a teaching tool
• Molekel – Molecule viewing software
• MeshLab – Able to import PDB dataset and build up surfaces from them
• PyMOL – High-quality representations of small molecules as well as biological macromolecules
• QuteMol – Interactive molecule representations offering an array of innovative OpenGL visual effects
• RasMol – Visualisation of biological macromolecules

Nanotechnology[edit]

• Ninithi – Visualise and analyse carbon allotropes, such as Carbon nanotube, Fullerene, Graphene nanoribbons

Plotting[edit]

Quantum chemistry[edit]

• CP2K – Atomistic and molecular simulation of solid-state, liquid, molecular, and biological systems

Screensavers[edit]

• BOINC
• Electric Sheep
• XScreenSaver

Statistics[edit]

• LimeSurvey – Online survey system

Theology[edit]

Bible study tools[edit]

• Go Bible – A free Bible viewer application for Java mobile phones
• Marcion – Coptic–English/Czech dictionary
• OpenLP – A worship presentation program licensed under the GNU General Public License
• The SWORD Project – The CrossWire Bible Society's free software project

Typesetting[edit]

See also[edit]

• Comparison of file synchronization software § Open-source
• List of HDL simulators § Free and open-source simulators
• List of optimization software § Free and open-source software
• List of concept- and mind-mapping software § Free and open-source
• List of spreadsheet software § Free and open-source software
• Comparison of FTP client software § Free and open-source software
• GNOME Core Applications
• List of GNU packages
• List of KDE applications
• List of formerly proprietary software
• List of Unix commands

General directories[edit]

• AlternativeTo
• CodePlex
• Free Software Directory
• Freecode
• Open Hub
• SourceForge

References[edit]

External links[edit]

• Open Source Software Directory (OSSD), a collection of FOSS organized by target audience.
• Open Source Living, a community-driven archive of open-source software (OSS).
• OpenDisc, a pre-assembled ISO image of OSS for Windows
• List of open-source programs (LOOP) for Windows, maintained by the Ubuntu Documentation Project.
• The OSSwin Project, a list of free and open-source software for Windows