List of free and open-source software packages

This article is about software free to be modified and distributed. For examples of software free in the monetary sense, see List of freeware.

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. 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.

Applied fields

Artificial intelligence

• General:
  • 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:
  • AForge.NET — Computer Vision, Artificial Intelligence and Robotics library for the .NET Framework
  • OpenCV — Computer Vision Library in C++
• Machine Learning:
  • See List of open-source machine learning software
  • See Data Mining below
  • See R programming language—packages of statistical learning and analysis tools
• Planning:
  • TREX — Reactive planning
• Robotics
  • ROS — Robot Operating System

CAD

Main category: Free computer-aided design software

• 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)

Main category: Free electronic design automation software

Computer simulation

Main article: List of free and open-source computer simulation software

• Blender — 3D modeling software written in C, C++, and Python containing cloth, hair, fluid, particle, and rigid body simulation techniques
• SimPy — Queue-theoretic event-based simulator written in Python
• flightgear — Flight simulator written for Windows, Mac OS X, and GNU/Linux
• FeatFlow — High-performance computational fluid dynamics CFD FEM solver

Finance

• Adempiere — Enterprise resource planning(ERP) business suite
• Bitcoin Core — Peer-to-peer decentralised digital currency
• Bonita Open Solution — Business Process Management
• CiviCRM — Constituent Relationship Management software aimed at NGOs
• Compiere — ERP solution automates accounting, supply chain, inventory, and sales orders
• Cyclos — Software for microfinance institutions, complementary currency systems and timebanks
• Dolibarr — Web-based ERP system
• GnuCash — Double-entry book-keeping
• HomeBank — Personal accounting software
• Ino erp — Dynamic pull based system ERP
• jFin — Java-based trade-processing program
• JFire — An ERP business suite written with Java and JDO
• KMyMoney — Double-entry book-keeping
• LedgerSMB — Double-entry book-keeping
• metasfresh — ERP Software
• Mifos — Microfinance Institution management software
• Openbravo
• OrangeHRM — Commercial human resource management
• Postbooks — Integrated accounting and ERP business suite
• QuickFIX — FIX protocol engine written in C++ with additional C#, Ruby, and Python wrappers
• QuickFIX/J — FIX protocol engine written in Java
• SQL Ledger — Double-entry book-keeping
• SugarCRM — Commercial Customer Relationship Management
• Tryton
• TurboCASH — Double-entry book-keeping for Windows

See also: Comparison of accounting software

Integrated Library Management Software

• 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

• 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
• Krita — Digital painting and sketching application, with a variety of brush engines
• RawTherapee — Digital image workflow management aimed at RAW photo processing

Mathematics

For a more comprehensive list, see List of open-source software for mathematics.

Reference management software

• See Comparison of reference management software.

Science

Main category: Free science software

Bioinformatics

• See List of open source bioinformatics software.

Cheminformatics

• Chemistry Development Kit
• JOELib
• OpenBabel

Geographic Information Systems

Main category: Free GIS software

Grid computing

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

Microscope image processing

• 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
• OsiriX — macOS DICOM viewing software
• VTK — C++ toolkit for 3D computer graphics, image processing, and visualisation
• 3DSlicer — Medical image analysis and visualisation

Molecular dynamics

• Abalone — Molecular dynamics software
• Ascalaph Designer — Molecular modeling and simulation
• 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

• 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

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

Plotting

Main category: Free plotting software

Risk Management

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

Statistics

Main category: Free statistical software

Surveys

• LimeSurvey — Online survey system

Quantum chemistry

• CP2K — Atomistic and molecular simulation of solid-state, liquid, molecular, and biological systems
• GAMESS (US) — Computational chemistry application

Assistive technology

Speech (synthesis and recognition)

• 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

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

Data storage and management

Backup software

Main category: Free backup software

Database management systems (including administration)

Main category: Free database management systems

Data mining

• 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
• SCaViS — Java-based data analysis framework
• 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

• 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

• ResourceSpace — Widely used system with roots in the NGO sector

Disk partitioning software

Main category: Free partitioning software

Enterprise search engines

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

ETLs (Extract Transform Load)

• Konstanz Information Miner (KNIME)
• Pentaho
• SpagoBI
• Talend

File archivers

Main category: Free data compression software

File Systems

• 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.

Networking and Internet

Advertising

• OpenX

Communication-related

• Asterisk — Telephony and VoIP server
• Ekiga — Video conferencing application for GNOME and Microsoft Windows
• 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

E-mail

Main category: Free email software

• Mozilla Thunderbird — email, news, RSS, and chat client
• Inky — email client with "smart views" that automatically organises email into individual folders
• Geary (software) — email client based on WebKitGTK+

File transfer

Main category: Free file transfer software

Grid and distributed processing

• GNU Queue
• HTCondor
• OpenLava
• pexec

Instant messaging

Main category: Free instant messaging clients

IRC Clients

Main category: Free Internet Relay Chat clients

Middleware

• 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

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

Peer-to-peer file sharing

Main category: Free file sharing software

See also: Category:Free BitTorrent clients.

• Popcorn Time — Multi-platform, free, and open-source media player

Portal Server

• Drupal
• eXo Platform
• Liferay
• Oxwall — Community site software
• Sun Java System Portal Server
• uPortal

Remote access and management

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

Routing software

Main category: Free routing software

Web browsers

Main category: Free web browsers

• Chromium — Minimalist web browser from which Google Chrome draws its source code
• Firefox — Mozilla-developed web browser using the Gecko layout engine
• Midori — Lightweight web browser using the Webkit layout engine
• Waterfox — Alternative to Firefox (64-Bit only)

Webcam

• Cheese — GNOME webcam application
• Guvcview — Linux webcam application

Webgrabber

• cURL
• HTTrack
• Wget

Web-related

• Apache Cocoon — A web application framework
• Apache — Most-popular web server
• AWStats — Log file parser and analyzer
• BookmarkSync — Tool for browsers
• Cherokee — Speedy, feature-rich HTTP server
• curl-loader — Powerful HTTP/HTTPS/FTP/FTPS loading and testing tool
• 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
• Piwik — Web analytics system
• 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

Other networking programs

• JXplorer — LDAP client
• OpenLDAP — LDAP server
• YaCy — P2P-based search engine
• ownCloud – File share and sync server
• Wireshark - Network monitor

Educational

Educational suites

• 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 — Education entertainment aimed at children aged 2-10
• Gnaural — Brainwave entrainment software
• 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

• KGeography — Educational game teaching geography

Learning support

Main category: Free learning support software

Language

• Kiten
• KVerbos

Typing

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

Other educational programs

• KEduca — An abandoned test management and creation tool

File managers

Main category: Free file managers

Games

Main article: List of open-source video games

Application layer

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

Genealogy

Main category: Free genealogy software

Graphical user interface

Desktop environments

Main category: Free desktop environments

Window managers

Main category: Free X window managers

Windowing system

Main category: Free windowing systems

Groupware

Main category: Free groupware

Content management systems

Main category: Free content management systems

Wiki software

Main category: Free wiki software

Healthcare software

Main articles: List of open-source health software and List of open-source bioinformatics software

Hobby software

Homebrewing

• CyberBrau

Media

2D animation

• 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
• Tupi (formerly KTooN) — Application for the design and creation of animation
• OpenToonz — Part of a family of 2D animation software

3D animation

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

Audio editors, audio management

Main article: Comparison of free software for audio

CD/USB-writing software

Main category: Free optical disc authoring software

Flash animation

• Pencil2D — For animations
• SWFTools — For scripting

Graphics

Main category: Free graphics software

Image galleries

Main category: Free image galleries

Image viewers

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

Multimedia codecs, containers, splitters

Main category: Free multimedia codecs, containers, and splitters

Television

Main article: List of free television software

Main category: Free television software

See also: Comparison of PVR software packages

Video converters

Main category: Free video conversion software

• Dr. DivX
• FFmpeg
• MEncoder
• OggConvert

Video editing

See also: List of video editing software § Free_and_open-source

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

Video encoders

Main article: Comparison of video encoders

• Avidemux
• HandBrake
• ShareX

Video players

Main article: Comparison of video player software

• VLC
• Media Player Classic

Other media packages

• Celtx — Media Pre-production Software

Operating systems

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.

Main category: Free software operating systems

Emulation and Virtualisation

Main category: Free emulation software

Main category: Free virtualization software

• VirtualBox

Password management

• KeePass
• Password Safe
• Mitro

Personal information managers

• Chandler — Developed by the OSAF
• KAddressBook
• Kontact
• KOrganizer
• Mozilla Calendar — A Mozilla-based, multi-platform calendar program
• Novell Evolution
• OpenSync (software)
• Project.net — Commercial Project Management
• TeamLab — Platform for project management and collaboration

Programming language support

Main article: List of open-source programming languages

Bug trackers

• Bugzilla
• Mantis
• Mindquarry
• Redmine
• Trac

Code generators

• 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

• 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

• Autoconf
• Automake
• BuildAMation
• CMake

Debuggers (for testing and trouble-shooting)

• GNU Debugger — "works for many programming languages [...]"
• Memtest86 — Stress-tests RAM on x86 machines
• Xnee — Record and replay tests

Integrated development environments

Main category: Free integrated development environments

Version control systems

Main category: Free version control software

Screensavers

• BOINC
• Electric Sheep
• XScreenSaver

Security

Anti-virus

• ClamAV
• ClamWin
• Gateway Anti-Virus
• Lynis

Data loss prevention

• MyDLP

Data recovery

• dvdisaster
• Foremost
• PhotoRec
• TestDisk

See also: List of data recovery software

Forensics

• The Coroner's Toolkit
• The Sleuth Kit

Anti-forensics

• USBKill

Disk erasing

• DBAN
• srm

Encryption

• GnuPG
• GnuTLS
• KGPG
• OpenSSL
• Seahorse
• Signal
• TextSecure
• wolfCrypt

Disk encryption

• CrossCrypt
• FreeOTFE and FreeOTFE Explorer
• eCryptfs

Database encryption

• Mydiamo

Firewall

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

Network and security monitoring

Main category: Free network management software

Secure Shell (ssh)

• Cyberduck — Mac OS X and Windows client (since version 4.0)
• Lsh — Server and client (supporting SRP and Kerberos authentication)
• OpenSSH — Client/server
• PuTTY — Client only

Other security programs

Main category: Free security software

Theology

Bible study tools

• BibleDesktop — For Cross-platform
• BibleTime — For Linux using KDE
• Go Bible — For Java Mobile Phones
• jSword — For Java
• MacSword — For Mac OS X
• Marcion — For Linux and Windows, using Qt UI Framework and embedded MySQL server
• openlp.org — Worship presentation software for churches to display songs, bibles, movies, etc.
• SwordBible — For Windows
• The SWORD Project for Windows — For Windows
• Xiphos The_SWORD_Project — For Linux using GNOME

Typesetting

Main category: Free typesetting software

See also

• Comparison of open source file synchronization software
• List of free and open-source HDL simulators
• List of free and open source optimization software
• List of free and open source mind-mapping software
• List of free and open source spreadsheet software
• List of free and open source FTP client software
• List of GNOME applications
• List of GNU packages
• List of KDE applications
• List of liberated software
• List of Unix programs

General directories

• SourceForge.net
• Freecode
• Ohloh
• CodePlex

External links

General Directories

• Free Software Directory — The Free Software Directory of the Free Software Foundation.
• Open Source Software Directory — Provides a list of open-source software organized by categories.
• Open Source Living — Open Source Living is a community-driven dynamic archive of open-source software.
• Ohloh — Ohloh is an open-source directory that anyone can edit.
• AlternativeTo – user-edited directory of alternatives to popular software – both open-source and non-open-source. Alternatives are listed under the software they are considered an alternative to, rather than requiring the user to browse to a relevant category.

Open-source for Windows

• List of open-source programs (LOOP list) for Windows
• TheOpenDisc.com pre-assembled disc of OSS for Windows (successor to TheOpenCD.org)
• The OSSwin project: Open Source for Windows