List of free and open-source software packages

This is a list of free and open-source software (FOSS) 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

Agentic AI

edit

General AI

edit

Large language models

edit

Computer vision

edit

Machine learning

edit

Planning

edit
  • TREX – reactive planning

Robotics

edit

Assistive technology

edit

Speech (synthesis and recognition)

edit

Other assistive technology

edit

Computer-aided engineering (CAE)

edit

Computer-aided manufacturing (CAM)

edit

Electronic design automation (EDA)

edit

Computer simulation

edit

Cryptography and Privacy Software

edit

Hacking and Network Security Tools

edit

Decentralized and Anonymous Communication Projects

edit

Decentralized File Sharing and Storage

edit

Cryptocurrencies and Anonymous Finance

edit

Cybersecurity

edit

Antivirus

edit

Data loss prevention

edit
  • MyDLP not updated since 2014

Data recovery

edit

Disk erasing

edit

Encryption

edit

Firewall

edit

Network and security monitoring

edit

Secure Shell (SSH)

edit

Password management

edit

Other cybersecurity programs

edit

Data storage and management

edit

Disk cleaning utilities

edit

Backup software

edit

Database management systems (including administration)

edit

Data mining

edit

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

Data interchange and markup libraries

edit

Disk partitioning software

edit

Enterprise search engines

edit

ETLs (Extract Transform Load)

edit

File archivers

edit

File systems

edit

Desktop publishing

edit
  • Collabora Online Draw and Writer – edition of LibreOffice accessible from a web browser
  • 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
  • LyX – "What You See Is What You Mean" document creation system, LyX makes use of the LaTeX markup macro system for TeX, allowing the elegant creation of documents which match up with the layouts in it for various document classes

E-book management and editing

edit
  • Calibre – cross-platform suite of ebook software
  • Collabora Online Writer – edition of LibreOffice accessible from a web browser
  • Sigil – editing software for e-books in the EPUB format

Education

edit

E-learning, learning support

edit
  • ATutor – web-based Learning Content Management System (LCMS)
  • Canvas LMS – web-based, open, extensible learning management system
  • 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
  • H5P – framework for creating and sharing interactive HTML5 content
  • IUP Portfolio – educational platform for Swedish schools
  • ILIAS – web-based learning management system (LMS)
  • Moodle – learning management system
  • OLAT – web-based Learning Content Management System
  • Omeka – content management system for online digital collections
  • Sakai Project – web-based learning management system
  • SWAD – web-based learning management system

Academic advising

edit
  • FlightPath – academic advising software for universities

Educational suites for children

edit
  • Tux Paint – painting application for 3–12 year olds
  • GCompris – educational entertainment, aimed at children aged 2–10

Language

edit

Operating systems

edit

Mind mapping & others

edit

Offline learning & Open data

edit
  • Kiwix – offline web browser that allows users to download Wikipedia's entire content and use it for offline learning. Later it was expanded with repositories for Wikimedia Foundation, public domain texts from Project Gutenberg, many of the Stack Exchange sites, and other resources
  • OpenStreetMap – OpenStreetMap was developed in 2004. It uses Open data and users data input through Crowdsourcing and Web mapping to create a complete and downloadable alternative to other online maps. This allow users to enter data when there is no data available due to lack of governance and economic interest or due to lower population of the places mapped

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

Engineering

edit

File formats

edit

Raster imagery

edit

Vector imagery

edit

Video

edit

Document & Text

edit

Web and Interactive Media

edit

Database & Data Storage

edit

File managers

edit

Finance

edit

Accounting

edit

Cryptocurrency

edit
  • Bitcoin – blockchain platform, peer-to-peer decentralised digital currency
  • Ethereum – blockchain platform with smart contract functionality
  • CiviCRM – Constituent Relationship Management software aimed at charities and NGOs
  • iDempiere – business Suite, ERP and CRM
  • SuiteCRM – web-based CRM

Human resources

edit
  • OrangeHRM – commercial human resource management

Microfinance

edit

Process management

edit

Games

edit

Game engines

edit

Physics engines

edit

Shader languages

edit

Action

edit

Application layer

edit

Chess

edit

Educational games

edit

Video game emulation

edit

Music video games

edit

Puzzle

edit

Sandbox

edit

Snake games

edit

Simulation

edit

Strategy

edit

Genealogy

edit

Geographic information systems

edit

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

Integrated library management software

edit
  • Evergreen – integrated Library System initially developed for the Georgia Public Library Service's PINES catalog
  • FOLIO - Modular, open-source library services platform
  • 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 abilities
  • GIMP – raster graphics editor aimed at image retouching/editing
  • Huginpanorama stitching
  • 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 – raster and vector graphics editor, aimed at being simpler to use than GIMP
  • LightZone – digital photo editor software application
  • Luminance HDRhigh dynamic range images
  • RawTherapee – digital image workflow management aimed at RAW photo processing

Maps & navigation

edit
  • OpenStreetMap – open geographic database updated and maintained by a community of volunteers via open collaboration
  • OsmAnd – freemium maps & navigation Android and iOS app
  • Organic Maps – offline map and navigation app for Android & iOS
  • CoMaps (Android, iOS)

Mathematics

edit

Calculators

edit

Computer algebra systems

edit

Physics

edit

Symbolic manipulation systems

edit

Statistics

edit

Numerical analysis

edit

Mathematical libraries

edit

Geometry

edit

Charting

edit

Mathematical biology

edit

Mathematical chemistry

edit

Mathematical notation software

edit

Mathematical art software

edit

Spreadsheet

edit

Mobile software

edit

Media

edit

Audio editors, audio management

edit
  • Audacity
  • Ardour – professional digital audio workstation
  • LMMS – digital audio workstation

CD/USB-writing software

edit

Flash animation

edit

Game engines

edit

Chess engines

edit

Graphics

edit
  • 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
  • mtPaintraster graphics editor for creating icons, pixel art

3D rendering

edit

Image galleries

edit

Image viewers

edit

Maps

edit

Multimedia codecs, containers, splitters

edit

Music

edit

Subtitle

edit

Television

edit

Video converters

edit

Video editing

edit

Screencast

edit

Other media packages

edit
  • Celtx – media pre-production software

Ripping

edit

Video players

edit

Networking and Internet

edit

Advertising

edit
edit

E-mail

edit

File transfer

edit

Grid and distributed processing

edit

Cloud computing platforms

edit

Instant messaging

edit

IRC Clients

edit

Middleware

edit

RSS, Atom readers, aggregators

edit

Social network

edit

Peer-to-peer file sharing

edit

Portal Server

edit

Remote access and management

edit

Monitoring and observability

edit

Routing software

edit

Web browsers

edit

Graphical

edit

Text-based

edit

Webcam

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

Webgrabber

edit
edit

Web search engines

edit

Other networking programs

edit

Office software

edit

Text editors

edit
SoftwarePlatform
AbiWordLinux, Windows
Atom (text editor)macOS 10.9 or later, Windows 7 and later, and Linux
geditLinux, MacOS
GNOME Text EditorLinux
Kate (text editor)25 Linux distributions, Microsoft Windows, macOS
LeafpadLinux, BSD, Maemo
MetapadWindows
MousepadLinux, BSD, Maemo
Notepad++Windows
Proton DocLinux, macOS, Windows, Android, iOS
Visual Studio CodeLinux, Windows, macOS

Spreadsheet software

edit
SoftwareOperating systemFormat
GnumericUnix-like (Linux included).gnm, .gnumeric
GNU OleoLinux.oleo[12]
PyspreadUnix-like, Windows.CSV, .XLS, .SVG, .PDF
SheetsterCross-platformJSON, XML, .XLS, .CSV, xlsx/.ooxml, .exml, .zip

Office suites

edit
  • Apache OpenOffice – the cross platform office productivity suite from Apache Software Foundation (ASF) consists of programs for word processing, spreadsheets, presentation, diagrams and drawings, databases, etc.
  • Calligra Suite – the office productivity suite from KDE consists of programs for word processing, spreadsheets, presentation, databases, vector graphics, and digital painting
  • Collabora Online – edition of LibreOffice, web application, mobile phone, tablet, Chromebook and desktop (Windows, macOS, Linux)[13]
  • LibreOffice – the cross platform office productivity suite from The Document Foundation (TDF) consists of programs for word processing, spreadsheets, presentation, diagrams and drawings, databases, etc.
  • OnlyOffice Desktop Editors – offline edition of the Cloud

PDF editors

edit
  • PDFsam Basic edition – platform independent software designed to split, merge, mix, extract pages and rotate PDF files for Windows, Linux, MacOS. Open-source version of their commercial offering

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 Virtualization

edit

Personal information managers

edit

Programming language support

edit

Programming languages

edit

Integrated development environments

edit

Source code editors

edit

Compilers and assemblers

edit

Bug trackers

edit

Debuggers (for testing and trouble-shooting)

edit

Code generators

edit

Build automation, configuration, and dependency management

edit

Software testing

edit

Static analysis and linting tools

edit

Containers and orchestration

edit

Documentation generators

edit

Version control systems

edit

Configuration management and deployment

edit

Reference management software

edit

Risk management

edit

Science

edit

Bioinformatics

edit

Biology

edit

Computational chemistry

edit

Molecular dynamics

edit

Molecular modeling

edit

Cheminformatics & docking

edit

Utilities / frameworks

edit

Data science

edit
  • Apache Flink – stream and batch data processing framework
  • Apache Hadoop – distributed storage and processing framework
  • Apache Mahout – scalable machine learning library
  • Apache Spark – unified analytics engine
  • Dask – parallel computing for analytics in Python
  • ELKI – data analysis algorithms library
  • GNU Octave – numerical computing environment
  • JASPGUI program for data analytics, data science, and machine learning
  • Jupyter Notebook – interactive computing
  • Keras – neural network library
  • KNIME – data analytics platform
  • Matplotlib – data visualization library
  • MLlib – machine learning library for Apache Spark
  • NumPy – numerical computing library
  • Orange – data mining tool
  • pandas – data manipulation library
  • PyTorch – machine learning and deep learning framework
  • Python
  • R – statistical computing language
  • SageMath – mathematics and data analysis environment
  • SciPy – scientific computing library
  • scikit-learn – Python machine learning library
  • TensorFlow – machine learning framework
  • WEKA – machine learning and data analysis suite

Electronic lab notebooks

edit

Geographic information systems

edit

Geoscience

edit

Grid computing

edit

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
  • FijiimageJ-based image processing
  • Gwyddion – scanning probe microscopy data visualization and 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 design software

edit

Molecular dynamics

edit
  • 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 to predict thermophysical properties of fluids
  • NWChem – wuantum chemical and molecular dynamics software

Molecule editors

edit

Molecular graphics systems

edit

Molecular mechanics modeling

edit

Molecule viewer

edit
  • Avogadro – plugin-extensible molecule visualisation
  • BALLView – molecular modeling and visualisation
  • Jmol – 3D representation of molecules in many formats, for teaching use
  • Molekel – molecule viewing software
  • MeshLab – able to import PDB dataset and build up surfaces from them
  • PyMOL – high-quality representations of small molecules and biological macromolecules
  • QuteMol – interactive molecule representations offering an array of innovative OpenGL visual effects
  • RasMol – visualizes biological macromolecules

Nanotechnology

edit

Nuclear Fusion Engineering

edit

Plotting

edit

Quantum chemistry

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

Screensavers

edit

Simulation software

edit

Statistics

edit
  • R – statistics software
  • LimeSurvey – online survey system

Theology

edit

Bible study tools

edit

Typesetting

edit

Web conferencing

edit

See also

edit

General directories

edit

Open-source organizations

edit

References

edit
  1. Richard Stallman (July 13, 2011). "Why Open Source misses the point of Free Software". Retrieved August 24, 2011.
  2. Allen, Matthew (2025-09-02). "Switzerland launches transparent ChatGPT alternative". SWI swissinfo.ch. Retrieved 2026-01-21. Apertus (from the Latin word meaning "open") leaves nothing to the imagination in this respect. It promises that every nut and bolt is open for public scrutiny along with its design manual and recipe formula.
  3. model weights only
  4. "google/gemma-4-31B-it · Hugging Face". huggingface.co. 2026-04-02. Retrieved 2026-04-07.
  5. Cheng, Evelyn (28 July 2025). "China's latest AI model claims to be even cheaper to use than DeepSeek". CNBC. Retrieved 12 April 2026.
  6. Heath, Alex (2025-08-05). "OpenAI releases a free GPT model that can run on your laptop". The Verge. Retrieved 2026-03-07.
  7. "Models Overview | Mistral AI Large Language Models". docs.mistral.ai. Archived from the original on 2025-04-09. Retrieved 2026-03-07.
  8. Mo, Liam; Hall, Casey (19 September 2024). "Alibaba accelerates AI push by releasing new open-source models, text-to-video". Reuters.
  9. "UBTECH-Robot/Thinker". June 2, 2026 via GitHub.
  10. "Further Development of Verification Check-casesforSix-Degree-of-Freedom Flight Vehicle Simulations" (PDF). NASA Engineering and Safety Center Academy. 2015. Archived (PDF) from the original on March 10, 2021.
  11. nostr - Notes and Other Stuff Transmitted by Relays, nostr-protocol, 2024-01-06, retrieved 2024-01-06
  12. "File Formats".
  13. Bärwaldt, Eric (2020-09-01). "Working Together Tools for collaborative office work". Linux Magazine (238/2020). For cross-platform use, the suite not only supports the Open Document Format (ODF) but also all newer Microsoft formats, which makes interaction with other office suites easier.
edit