List Of Free And Open-Source Software

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.[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

General AI

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
• Webots – Robot Simulator
• YARP – Yet Another Robot Platform

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

CAD

Main category: Free computer-aided design software

• FreeCAD – Parametric 3D CAD modeler with focus on mechanical engineering, BIM, and product design
• LibreCAD – 2D CAD software using AutoCAD-like interface and file format
• SolveSpace – 2D and 3D CAD, constraint-based parametric modeler with simple mechanical simulation capabilities.
• BRL-CAD – a constructive solid geometry (CSG) solid modeling computer-aided design (CAD) system.

Electronic design automation (EDA)

Main category: Free electronic design automation software

• Fritzing
• KiCad

Computer simulation

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

• Blender – 3D computer graphics software toolset used for creating animated films, visual effects, art, 3D printed models, and motion graphics.
• FlightGear – atmospheric and orbital flight simulator with flight dynamics engine (JSBSim) that is used in a 2015 NASA benchmark^[2] to judge new simulation code to space industry standards.
• SimPy – Queue-theoretic event-based simulator written in Python

Cybersecurity

Main article: Cybersecurity

Antivirus

See also: Antivirus software

• ClamAV
• ClamWin
• Lynis

Data loss prevention

See also: Data loss prevention software

• MyDLP

Data recovery

See also: Data recovery and List of data recovery software

• dvdisaster
• Foremost
• PhotoRec
• TestDisk

Forensics

See also: Forensic science

• The Coroner’s Toolkit
• The Sleuth Kit

Anti-forensics

See also: Anti-forensics

• USBKill
• TAILS
• BusKill

Disk erasing

See also: Disk Cleanup

• DBAN
• srm

Encryption

See also: Encryption, Encryption software, and List of encrypting file systems

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

Disk encryption

See also: Disk encryption and Disk encryption software

• dm-crypt
• CrossCrypt
• FreeOTFE and FreeOTFE Explorer
• eCryptfs

Firewall

See also: Firewall (computing) and Firewall software

• Uncomplicated Firewall (ufw)
• Firestarter
• IPFilter
• ipfw
• iptables
• M0n0wall
• PeerGuardian
• PF
• pfSense
• Rope
• Shorewall
• SmoothWall
• Vyatta

Network and security monitoring

Main category: Free network management software

• 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)

See also: Secure Shell

• 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

• Bitwarden
• KeePass
• KeePassXC (multiplatform fork able to open KeePass databases)
• Password Safe
• Mitro
• Pass

Other cybersecurity programs

Main category: Free security software

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
• FrontlineSMS – Information distribution and collecting via text messaging (SMS)
• Konstanz Information Miner (KNIME)
• OpenNN – Open-source neural networks software library written in C++
• 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

Disk partitioning software

Main category: Free partitioning software

Enterprise search engines

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

ETLs (Extract Transform Load)

• Konstanz Information Miner (KNIME)
• Pentaho

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.

Desktop publishing

• Collabora Online Draw and Writer – Enterprise-ready edition of LibreOffice accessible from web browser. The Draw application is for flyers, newsletters, brochures and more, Writer has most of the functionality too.^[3]
• 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

• Calibre – Cross-platform suite of e-book software
• Collabora Online Writer – Enterprise-ready edition of LibreOffice accessible from web browser. Allows exporting in the EPUB format.^[4]
• Sigil – Editing software for e-books in the EPUB format

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 – 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

Learning support

Main category: Free learning support software

Language

• Kiten

Typing

• 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

Main category: Free file managers

Finance

Accounting

See also: Comparison of accounting software

• 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

See also: Cryptocurrency

• Bitcoin – Blockchain platform, peer-to-peer decentralised digital currency
• Ethereum – Blockchain platform with smart contract functionality

CRM

See also: Customer relationship management

• CiviCRM – Constituent Relationship Management software aimed at NGOs
• iDempiere – Business Suite, ERP and CRM
• SuiteCRM – Web-based CRM

ERP

See also: Enterprise resource planning

• 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

• OrangeHRM – Commercial human resource management

Microfinance

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

Process management

• Bonita Open Solution – Business Process Management

Trading

• 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

Main article: List of open-source video games

Action

• Xonotic – First-person shooter that runs on 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

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

Emulation

• 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
• PCSX2 – A PlayStation 2 emulator designed to recreate the hardware of PlayStation 2 systems
• PPSSPP – A PlayStation Portable emulator designed to recreate the hardware of PlayStation Portable systems
• RPCS3 – A PlayStation 3 emulator designed to recreate the hardware of PlayStation 3 systems
• Dolphin (emulator) – A GameCube and Wii emulator designed to recreate the hardware of GameCube and Wii systems
• Citra (emulator) – A Nintendo 3DS and Wii emulator designed to recreate the hardware of Nintendo 3DS systems
• Cemu – A Wii U emulator designed to recreate the hardware of Wii U systems
• Yuzu (emulator) – a Nintendo Switch emulator

Puzzle

• Pingus – Lemmings alternative with penguins instead of lemmings.

Sandbox

• Minetest – An open source voxel game engine.

Simulation

• 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

• 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

Main category: Free genealogy software

• Gramps (software) – a free and open source genealogy software.

Geographic information systems

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

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

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
• Karbon – Scalable vector drawing application in KDE
• Krita – Digital painting, sketching and 2D animation application, with a variety of brush engines
• LazPaint – Lightweight raster and vector graphics editor, aimed at being simpler to use than GIMP
• LightZone – Free, open-source digital photo editor software application.
• RawTherapee – Digital image workflow management aimed at RAW photo processing

Mathematics

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

Statistics

• R Statistics Software

Numerical Analysis

• Octave – Numerical Analysis Software

Geometry

• Geogebra – Geometry and Algebra

Spreadsheet

• LibreOffice Calc algebraic operations on table cells – descriptive data analysis

Media

Audio editors, audio management

Main article: Comparison of free software for audio

• Audacity
• LMMS

CD/USB-writing software

Main category: Free optical disc authoring software

Flash animation

• Pencil2D – For animations
• SWFTools – For scripting

Game engines

Main article: List of game engines

• Godot – Application for the design of cross-platform video games.
• Blender Game Engine
• Leela Chess Zero – Universal Chess Interface chess engine
• Open3DEngine
• Stockfish – Universal Chess Interface chess engine
• Stride – (prev. Xenko) 2D and 3D cross-platform game engine originally developed by Silicon Studio.

Graphics

Main category: Free graphics software

2D

• Pencil2D – Simple 2D graphics and animation program
• 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
• Krita – Digital painting, sketching and 2D animation application, with a variety of brush engines
• Blender – Computer graphics software, Blender’s Grease Pencil tools allow for 2D animation within a full 3D pipeline.
• mtPaint – raster graphics editor for creating icons, pixel art

3D

• Blender – 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
• Wings 3D – subdivision modeler inspired by Nendo and Mirai from Izware.

Image galleries

Main category: Free image galleries

Image viewers

• Eye of GNOME
• F-spot
• feh
• 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
• DVD Flick
• Flowblade
• Kdenlive
• Kino
• LiVES
• LosslessCut
• Natron
• Olive
• OpenShot
• Pitivi
• Shotcut
• VirtualDub
• VirtualDubMod
• VideoLAN Movie Creator

Video encoders

Main article: Comparison of video encoders

• Avidemux
• HandBrake
• FFmpeg

Video players

Main article: Comparison of video player software

• Media Player Classic
• VLC media player
• mpv

Other media packages

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

Networking and Internet

Advertising

• Revive Adserver

Communication-related

• 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
• Jami – Cross-platform, peer to peer instant-messaging and video-calling protocol that offers end-to-end encryption and SIP client
• 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
• Tox – Cross-platform, peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption

E-mail

Main category: Free email software

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

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
• OpenRemote – IoT Middleware
• 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
• NetNewsWire – macOS, iOS
• News Reader
• 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

Main category: Free file sharing software

See also: Category:Free BitTorrent clients

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

Portal Server

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

Remote access and management

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

Routing software

Main category: Free routing software

Web browsers

Main category: Free web browsers

Graphical

• Chromium – web browser using the custom Blink engine from which Google Chrome draws its source code
• Brave – privacy-focused web browser based on the Chromium browser.
• Falkon – web browser based on the Blink engine, a KDE project
• Firefox – Mozilla-developed web browser using the Gecko layout engine
• Waterfox – Firefox fork supporting legacy extensions (64-bit only)
• Pale Moon – a customizable fork of Firefox
• Tor Browser – onion-routed browser by The Tor Project, based on Firefox ESR
• GNOME Web – WebKit-based web browser for the GNOME desktop environment
• Midori – Lightweight web browser using the WebKit layout engine
• qutebrowser – keyboard operated Webkit-based browser with vi-like keybindings
• SeaMonkey Navigator – the SeaMonkey internet suite’s web browser
• Surf – minimal tab-less browser by suckless.org using WebKitGTK

Text-based

• Lynx – a text-based web browser developed since 1992
• Links – a text-based browser with a framebuffer-based graphical mode
• Elinks – featureful fork of Links with javascript support

Webcam

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

Webgrabber

• cURL
• HTTrack
• Wget

Web-related

• 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 – Web proxy cache
• Vaadin – Fast, Java-based framework for creating web applications
• Varnish – 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

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

Other networking programs

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

Office suites

• Apache OpenOffice (formerly known as OpenOffice.org)
• Calligra Suite – The continuation of KOffice under a new name
• Collabora Online – Enterprise-ready edition of LibreOffice, web application, mobile phone, tablet, Chromebook and desktop (Windows, macOS, Linux)^[5]
• LibreOffice – Independent Work of OpenOffice.org with a number of enhancements
• ONLYOFFICE Desktop Editors – An open-source offline edition of the Cloud

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

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

Personal information managers

• 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

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
• 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 – 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

Main category: Free integrated development environments

Version control systems

Main category: Free version control software

Reference management software

See also: Comparison of reference management software

Risk Management

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

Science

Main category: Free science software

Bioinformatics

See also: List of open source bioinformatics software

Cheminformatics

• Chemistry Development Kit
• JOELib
• OpenBabel

Electronic Lab Notebooks

• Jupyter

Geographic Information Systems

Main category: Free GIS software

Geoscience

See also: List of free geology software and Comparison of free geophysics 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 – 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

• GROMACS – Protein, lipid, and nucleic acid simulation
• LAMMPS – Molecular dynamics software
• MDynaMix – General-purpose molecular dynamics, simulating mixtures of molecules
• ms2 – molecular dynamics and Monte Carlo simulation package for the prediction of thermophysical properties of fluids
• 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

• Veusz

Quantum chemistry

See also: List of quantum chemistry and solid-state physics software

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

Screensavers

• BOINC
• Electric Sheep
• XScreenSaver

Statistics

Main category: Free statistical software

• R Statistics Software
• LimeSurvey – Online survey system

Theology

Bible study tools

• 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

Main category: Free typesetting software

List of free and open source software packages.

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.

Freeware is software that is available for use at no monetary cost or for an optional fee,^[1] but usually (although not necessarily) closed source with one or more restricted usage rights. Freeware is in contrast to commercial software, which is typically sold for profit, but might be distributed for business or commercial purpose in the aim to expand the marketshare of a “premium” product. Popular examples of closed-source freeware include Adobe Reader, Free Studio and Skype. This is a list of notable software packages that meet the freeware definition.

3D artistry

• Anim8or^[2]
• Daz Studio^[3]

Administration

Remote access

• TeamViewer^[4]

System monitoring and benchmarking

• CPU-Z^[5]
• Mactracker^[6]
• Process Explorer^[7]
• Process Monitor^[8]
• Runscanner^[9]
• Samurize^[10]

Tweaking and configuration

• Tweak UI^[11]
• RivaTuner^[12]

Audio tools

• Jeskola Buzz^[13]
• SoundApp^[14]
• Mp3tag^[15]
• UTAU
• Audacity

Authoring (CD and DVD writing)

• CDBurnerXP^[16]
• ImgBurn^[4]

Communications and messengers

• ooVoo^[17]
• Skype^[4]
• Telegram
• Trillian^[4]
• Xfire^[18]
• WeChat
• Windows Live Messenger
• Yahoo! Messenger^[19]

Mobile phone

• Disc2Phone^[20]
• MyPhoneExplorer^[21]
• Syncios^[22]

Compression

• B1 Free Archiver^[23]
• Filzip^[24]
• LHA^[25]
• TUGZip^[26]
• ZipGenius^[27]

Decompression

• StuffIt Expander^[28]
• Zipeg^[29]

Concept- and mind-mapping software

Further information: List of concept- and mind-mapping software § Freeware

Data recovery

• Recuva^[4]
• Stellar Phoenix Windows Data Recovery^[30]

Defragmentation software

Further information: List of defragmentation software § Freeware

Desktop plug-ins

• AveDesk^[31]
• Kapsules^[32]
• RocketDock^[33]

Download software

• CoreFTP^[34]
• FlashGet^[35]
• Free Studio^[36]
• WinMX^[37]
• μTorrent^[4]

Email

• ePrompter^[38]
• Foxmail
• Pegasus Mail^[39]

Emulators

Main article: List of emulators

File management

• Xplorer² Lite^[40]

Fractal generators

• Fractint^[41]

Games

Further information: List of freeware video games, List of freeware first-person shooters, and List of commercial games released as freeware

Image manipulation

• Artweaver^[42]
• GIMP
• Paint.NET^[4]
• Pixia^[43]

Image viewers

Main article: Comparison of image viewers

• FastStone Image Viewer^[44]
• IrfanView^[45]
• Jalbum^[46]
• XnView^[47]

Information

• GrabIt^[48]
• Lingoes^[49]
• NetNewsWire^[50]
• ProgDVB^[51]
• Xnews^[52]

Maintenance

• Auslogics Disk Defrag^[53]
• CCleaner^[4]
• Revo Uninstaller^[4]
• Should I Remove It?^[54]
• SmartDefrag^[55]
• UltimateDefrag^[56]
• UpdateStar^[57]
• ZSoft Uninstaller^[58]

Media manipulation and creation

• Any Video Converter^[59]
• Audiograbber^[60]
• DVD Shrink^[61]
• FormatFactory^[62]
• Free Studio^[63]
• GSpot^[64]
• VirtualDub^[4]

Media players and media centers

• AIMP^[65]
• ALLPlayer^[66]
• foobar2000^[67]
• GOM Player
• Groove Music
• Microsoft Movies & TV
• Sonique^[68]
• Winamp^[69]
• XMPlay

Medical

Further information: List of freeware health software

Office suite

Main article: List of office suites

Optical disk authoring software

Further information: List of optical disc authoring software § Freeware

Optimization software

Further information: List of optimization software § Freeware

PDF and printing

Main article: List of PDF software

• doPDF^[70]
• Foxit Reader^[71]
• PrimoPDF^[72]
• Sumatra PDF^[4]
• PrimoPDF^[4]

Productivity

• Evernote^[4]
• Windows Live Essentials^[73]

Programming

• AutoIt^[74]
• HxD^[75]
• Microsoft Visual Studio Express^[76]
• RISE Editor
• Atom

Security

• Comodo Internet Security^[77]
• HDDerase^[78]
• HijackThis^[79]
• K9 Web Protection^[80]
• Malwarebytes’ Anti-Malware^[4]
• RootkitRevealer^[81]
• ZoneAlarm^[4]

Antivirus

• Panda Cloud Antivirus^[4]
• Avast!^[82]
• AVG^[83]

Simulators

• HNSKY^[84]

Physics

• Algodoo^[85]

Virtual machine

• VMware Player^[86]
• VirtualBox
• QEMU

Discontinued

• AIDA32^[87]

Statistical packages

Main article: List of freeware statistical packages

Text editors

• BBEdit Lite^[88]
• Codelobster^[89]
• Programmer’s File Editor^[90]
• PSPad^[91]
• TED Notepad^[92]
• TextWrangler^[93]

Typeface software

Further information: List of freeware type designers

Video transcoding software

Further information: List of video transcoding software § Freeware

Web browsers

Main article: List of web browsers

• Avant Browser^[94]
• Maxthon^[95]
• Opera^[96]
• QQ browser
• SlimBrowser^[97]

Word processors

Further information: List of freeware word processors

Virtual printer software

Further information: List of virtual printer software § Freeware