Summer of Code
Science and Medicine
End User Applications
Programming Languages and Development Tools
Graphics / Video / Audio / Virtual Reality
Social / Communications
Data and Databases
The 3D Toolkit provides algorithms and methods to process 3D point clouds
52° North Initiative for Geospatial Open Source Software GmbH
52°North works on innovative ideas and technologies in geoinformatics
making space together
Code for the book "Artificial Intelligence: A Modern Approach"
Amahi, a home digital assistant at your fingertips.
AOSSIE - Australian Open Source Software Innovation and Education
Australian Umbrella Org for Open-Source Projects
Apache Software Foundation
Providing open source software to the public free of charge
A free/open-source platform for machine translation and language technology
Open Technology for Professional Film Production
A modern open source rendering engine for animation and visual effects
The worlds most advanced open source autopilot
Open hardware and software for physical computing
From distributed systems, to robust servers and language design on the Erlang VM
Tools for cross-platform Python application development.
Berkman Klein Center for Internet & Society at Harvard University
Exploring cyberspace, sharing in its study, and helping pioneer its development.
We build a free and open source 3D creation suite.
Boost C++ Libraries
Boost provides free peer-reviewed portable C++ source libraries
Boston University / XIA
Crowdsourcing the future Internet
Solid modeling, 3D printing, comp. graphics, & other computer-aided tech (CAx)!
Canadian Centre for Computational Genomics
Analytical solutions for Next-Generation Sequencing data
Computational Thinking for all through visual programming on phones
Experimenting with video software and hardware, subtitles, imaging, cloud...
Center for Research In Open Source Software (CROSS) at UC Santa Cruz
Bridging the Gap Between Student Work and Open Source Software Projects
Umbrella organization for Particle (High-energy) Physics-related projects
C++ library of computational geometry and geometry processing
CHAOSS: Community Health Analytics Open Source Software
Advacing open source project health and sustainability
Preventing programming errors before they happen, via easy-to-use verification
Build, engage and organize your constituents
Classical Language Toolkit
NLP for the Ancient World
CLiPS, University of Antwerp
Cloud Native Computing Foundation (CNCF)
Sustaining open source cloud native projects like Kubernetes and Prometheus
Building platforms for reproducible AI research
Linting and Fixing Code for All Languages
Computational Biology @ University of Nebraska-Lincoln
Further knowledge in health through computation, data visualization and analysis
An open source instant messaging client and ecosystem based on Jabber & XMPP
Cuneiform Digital Library Initiative
International digital library of artifacts inscribed with cuneiform writing
An Open Platform for a Large, Multilingual, Semantic Knowledge Graph
the universal operating system
An open community digital public services developers
Digital Impact Alliance
Supporting open source projects for a digital society that serves everyone.
Django Software Foundation
The web framework for perfectionists with deadlines.
Drupal is a Free, Open, Modular CMS written in PHP. Let's make something amazing
Earth Science Information Partners (ESIP)
Making Earth science data matter.
We are the creators of Elasticsearch, Kibana, Beats, and Logstash.
Eta is a dialect of Haskell on the Java Virtual Machine.
Fedora Linux is built on the foundations of Freedom, Friends, Features, & First
A complete, cross-platform solution to record, convert & stream audio and video.
Improve People's Lives
Open Source License Compliance by Open Source Software
Free and Open Source Silicon Foundation
The home for open source hardware, EDA tools and the related ecosystem
Free UK Genealogy
Human transcription of family history data
FreeBSD: The Foundation of the Internet
A software library to render fonts.
Freifunk is a non-commercial initiative for free and open wireless networks.
Genes, Genomes and Variation
Genomic sequence and annotation databases and browsers
Developing open software for IVI and the connected car.
A flexible, source-based Linux distribution.
GFOSS - Open Technologies Alliance
Promote Openness with the use and development of Open Standards & Open Source.
Fast, scalable, distributed revision control system
Global Alliance for Genomics and Health
We develop open standards and tools for genomics to benefit human health.
A free desktop environment for GNU/Linux.
An open source Global Navigation Satellite Systems software-defined receiver
GNU Compiler Collection (GCC)
Free Your Numbers
GNU is an operating system that is free software
The free & open software radio ecosystem
Godot is a multi-platform 2D and 3D game engine with a feature-rich editor
A high performance, open-source universal RPC framework
Integrated operating system for personal computers
Standardized, statically typed, lazy functional programming language
An open source, console package manager for macOS
Advancing global collaborative brain research
Inclusive Design Institute
The IDI addresses the challenge of designing ICT to work for all potential users
Inkscape is a professional vector graphics editor for Windows, Mac OSX, & Linux.
SOFA is an efficient simulation engine for research in medical simulation.
Institute for Artificial Intelligence
Research in Artificial Intelligence for Autonomous Mobile Robots
Intel Media And Audio For Linux
Open Source Media libraries, Applications, User space driver and Specification.
Integrating biological data sources, making it easy to query and analyse data
Universal Access to All Knowledge
Internet Systems Consortium
We support critical internet infrastructure with quality open source
Community of Java projects around JBoss Middleware
JdeRobot - Universidad Rey Juan Carlos
A software framework for developing applications in robotics and computer vision
Jenkins is an open-source automation server
Java library that provides graph data-structures and algorithms.
The most innovative Open Source video conferencing community. Period.
Joomla, the flexible platform empowering website creators.
JSK Robotics Laboratory / The University of Tokyo
JSK is focusing on the fundamental functions & systems for intelligent robots .
Internet content for people without internet access
Programming Languages Research with emphasis on the Lua language
Style and grammar checker
LEAP Encryption Access Project
We make encryption easy to use.
Healthcare for Humanity
LibreOffice is the leading free and open source office suite.
Toolkit to manage virtualization hosts from many languages
LLVM Compiler Infrastructure
LLVM Compiler Infrastructure
The package manager for the Lua programming language
One of the most popular databases on the web with many notable users
An ambitious open ecosystem for decentralised, encrypted communication.
MetaBrainz Foundation Inc.
Curating open data sets with open source softer and loads of volunteers.
The world’s most used penetration testing framework
Mixxx DJ Software
DJ Your Way, For Free. Join our friendly community of hackers, DJs, and artists!
a scalable C++ machine learning library
Mobile Robot Programming Toolkit (MRPT)
Empowering C++ development in robotics
Empowering educators to improve our world
Terasology: like an open source Minecraft - imagine the possibilities!
Internet for people, not profit.
Create, play and print beautiful sheet music
National Resource for Network Biology (NRNB)
Developing open source software to enable network-based biomedical discovery
Vim-fork focused on extensibility and usability
netfilter.org is the home of the Linux firewalling tools
Open Code = Better Science
omegaUp is aimed to increase the number of talented Software Engineers in LatAm.
Open Bioinformatics Foundation
Promoting practice & philosophy of OSS & Open Science in biological research.
Advancing Open Source and Open Science for Chemistry
Open Data Kit
Open Data Kit is used to collect data for social good in difficult environments.
Open Food Facts
A collaborative, free and open database of food and cosmetic products.
Open Roberta Lab
Open Roberta® Lab is an online IDE introducing kids to program robots with NEPO®
Open Source Robotics Foundation
Our mission is to support the development of OSS for use in robotics
Open Source State Legislative Data
Opening the eyes of research astronomy software to the whole world.
Planet Scale Tracing and Monitoring
Write code. Save lives.
A multi-purpose Open Source SIP proxy/server for carriers, telecoms or ITSPs
Creating and distributing free geographic data for the world.
The makers' choice for sysadmins, developers and desktop users.
Open Source solution to build and manage wifi networks
Developing Open Event Solutions for Everyone
Adaptive, enjoyable learning experiences that provide personalized feedback.
The Open Source Geospatial Foundation
The open source community for infrastructure software.
OWASP, The Open Web Application Security Project.
Shaping the future Internet TV
Develop accessible tools for reproducible ecosystem modeling and forecasting
Performance Co-Pilot - system-level performance analysis toolkit
phpBB Forum Software
phpBB is the most widely used free and open-source forum solution.
A web interface for MySQL written in PHP
The premier python-based open source CMS
An extensible cross-language static code analyzer.
Pocket Science Lab
Miniaturizing the Open Science Lab with Open Hardware and Open Source Software
Promoting Polyhedral Compilation
PostgreSQL is a powerful, open source object-relational database system.
Automate and improve GitHub workflows
Open hardware and software to help communities measure and analyze pollution
Visual Programming Language for Realtime Multimedia
Build better Web APIs. Enable smart clients.
Python Software Foundation
Python is a programming language used by software developers and scientists.
QEMU is an open source machine emulator and virtualizer
Helping millions of learners become better writers and critical thinkers
R project for statistical computing
R is a free software environment for statistical computing and graphics
Radare2 reverse engineering framework and toolset
ReactOS is a free, open source, Windows compatible operating system.
Read the Docs
Read the Docs hosts documentation for the open source community.
Red Hen Lab
Research on Multimodal Communication
RoboComp is an open-source framework to develop and manage robot components.
The ultimate free open source solution for team communications
An advanced spam filtering system
RTEMS is a real-time operating system kernel used around the world and in space.
The Ruby programming language, libraries, and tools
Ruby on Rails
Ruby on Rails is web framework that optimizes for programmer happinness.
Ruby Science Foundation
Scientific Computing tools for Ruby
Sage Mathematical Software System
Creating a viable free alternative to Magma, Maple, Mathematica and Matlab.
The programming language where object-oriented meets functional.
Cross-platform numerical computational package and programming language.
ScummVM is a GSoC umbrella for game preservation projects
Framework for writing high-performance server applications on modern hardware
Software and Computational Systems Lab at LMU Munich
Software Analysis, Software Verification, and Benchmarking
Space @ Virginia Tech
Space@VT is devoted to the investigation of the space environment.
Promoting open source compliance through standard communication of SW licenses.
Stemformatics is a web-based pocket dictionary for stem cell scientists.
HPX: The C++ Standard Library for Parallelism and Concurrency
Stony Brook University Biomedical Informatics
Advance biomedical knowledge through innovative data science research
linux syscall tracer
Design, remix, and share your neighborhood street, all in your browser.
Programming assignment submission with automated grading and manual TA grading
We make tools that learners use to explore, discover, create, and reflect.
Sustainable Computing Research Group (SCoRe)
SCoRe has conducted research covering various aspects of Security, Mobile & IOT.
Swift is a high-performance system programming language.
SymPy is a Python library for symbolic mathematics.
Helping women find their potential in code. You are not alone.
TEAMMATES @ National University of Singapore
An online feedback management system for education
The Center for Connected Learning and Computer-Based Modeling
NetLogo: A language and IDE for programming and scientific simulations
The Eclipse Foundation
An amazing open source community of diverse technology and collaboration.
The Honeynet Project
The Honeynet Project - R&D for Honeypot/Honeynet Technology and InfoSec Research
The Java Pathfinder Team
JPF is a highly extensible Java virtual machine built for software verification
The Libreswan Project
Encrypting the Internet with IKE and IPsec
The Linux Foundation
A non-profit consortium dedicated to fostering the growth of Linux
The MacPorts Project
Open Source package manager for macOS
The Mifos Initiative
End Poverty One Line of Code at a Time
The NetBSD Foundation
Of course it runs NetBSD
The ns-3 Network Simulator Project
ns-3 is a packet-level network simulator for research and education.
The Processing Foundation
Our goal is to empower people of all backgrounds to learn how to program.
The Qt Project
The Qt Project co-ordinates the development of the Qt software framework.
The syslog-ng project.
Open source log management solution with over a million users worldwide.
The Vega Visualization Tools by the UW Interactive Data Lab
Declarative formats & Applications for Creating, Saving & Sharing Visualizations
The Wine Project
Wine runs Windows applications on Linux, BSD, Solaris, macOS and Android.
Software+hardware for recording & streaming conferences, meetings, user groups.
TLA+ is a formal specification language used to design, model and verify systems
Helping biologists see the bigger picture in diverse cancer genomics data
Open Source Multimedia everywhere
Visual tracking and visual servoing library
vitrivr - the open-source multimedia search engine
webpack is THE build tool for modern web applications run on NodeJS
Global movement whose mission is to bring free educational content to the world
WorldBrain.io - Verifying the Internet
Bookmarking extension that works like your brain - full-text search everything.
X Window System and related projects (Mesa, DRI, Wayland, etc.)
Xapian Search Engine Library
Fast, scalable and flexible search
The ultimate entertainment center
Xi Editor Project
A modern text editor with a backend written in Rust.
Screen for X11, remote desktop platform.
The Advanced Open Source Enterprise Wiki
Powerful, modern, open source team chat, complete with apps for every platform.
Search for projects, organizations or usernames