522 organizations since 2016

• 

  Blender Foundation

  End user applications

  Blender is a free and open source 3D creation suite, providing individuals and small teams a complete pipeline for 3D graphics, modeling, animation and games.

  2026

  8

  Cycles

  11

  Projects

  72

  Trend

  CPythonOpenGLC+++2
• 

  BRL-CAD

  Media

  <p>This is the place to be if you love computer graphics. We do 2D/3D modeling, 3D printing, solid geometry, design, and more. Depending on the project, you have the opportunity to work with C/C++, Python, OpenGL, OpenCL, Qt, Javascript, and more... Help us develop open source computer-aided technologies (CAx)!</p> <br> <p>We operates as an umbrella organization with several CAx communities including:</p> <br> <ul> <li> - OpenSCAD is a solid 3D modeler with a rich syntax for programmable geometry. <li> - LibreCAD is a 2D modeling system specializing in blueprint-style drawings and draftings. <li> - IfcOpenShell is a library for working with standard IFC building model data. <li> - BRL-CAD is a solid modeling suite with conversion and advanced solid ray tracing features. <li> - Manifold is a solid geometry mesh processing library. </ul> <br> <p>We want to select at least one student for each, so feel free to ask us where to start.</p> <br> <a href="https://opencax.github.io"><img src="https://summerofcode.withgoogle.com/media/org/brl-cad/4ec07aqdfrvygfed-360.png"></a>

  2026

  8

  Cycles

  11

  Projects

  81

  Trend

  PythonCC++OpenGL+7
• 

  CCExtractor Development

  End user applications

  CCExtractor Development is the creator of the de-facto captions extraction tool - CCExtractor. It is the one tool that is free, portable, open source and community managed that can take a recording from a TV show and generate an external subtitle file for it.

  2026

  6

  Cycles

  11

  Projects

  86

  Trend

  CLinuxVideoFFmpeg+13
• 

  FFmpeg

  Media

  FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge. No matter if they were designed by some standards committee, the community or a corporation. It is also highly portable: FFmpeg compiles, runs, and passes our testing infrastructure FATE across Linux, Mac OS X, Microsoft.

  2026

  3

  Cycles

  11

  Projects

  52

  Trend

  CGitAsmAssembly+2
• 

  Free and Open Source Silicon Foundation

  Other

  The FOSSi (Free and Open Source Silicon) Foundation is a not-for-profit organization with the support the growing community of open source silicon hardware. We do this with a variety of activities and through Google Summer of Code we bring together enthusiastic mentees and outstanding projects. Under our umbrella are open source silicon hardware projects, operating systems and compilers for such projects, tools for electronic design automation and the related ecosystem.

  2026

  5

  Cycles

  11

  Projects

  65

  Trend

  PythonJavaScriptFPGACompiler+10
• 

  Git

  Programming languages

  Git is the most widely-used revision control system in Open Source. It is a distributed system with an emphasis on speed, data integrity, and support for distributed, non-linear workflows.

  2026

  4

  Cycles

  11

  Projects

  26

  Trend

  CShell ScriptGitShell+1
• 

  GNOME Foundation

  Operating systems

  The GNOME Foundation is a non-profit organization that believes in a world where everyone is empowered by technology they can trust. We do this by building a diverse and sustainable free software personal computing ecosystem.

  2026

  6

  Cycles

  11

  Projects

  121

  Trend

  CPythonJavaScriptGTK++6
• 

  INCF

  Science and medicine

  The International Neuroinformatics Coordinating Facility (INCF; www.incf.org) is an international organization launched in 2005, following a proposal from the Global Science Forum of the OECD.

  2026

  23

  Cycles

  11

  Projects

  234

  Trend

  PythonJavaScriptJavaC+++6
• 

  KDE Community

  End user applications

  Community of technologists, designers, writers and advocates who work to ensure freedom for all people through our software.

  2026

  12

  Cycles

  11

  Projects

  179

  Trend

  C++QtCMakePHP+6
• 

  LLVM Compiler Infrastructure

  Programming languages

  The LLVM Project is a collection of modular and reusable compiler and toolchain technologies. Despite its name, LLVM has little to do with traditional virtual machines. The name "LLVM" itself is not an acronym; it is the full name of the project.

  2026

  13

  Cycles

  11

  Projects

  135

  Trend

  CLLVMC++Clang+1
• 

  MariaDB

  Data

  MariaDB Foundation is the non-profit organization behind MariaDB Server, the fastest growing open source databases. MariaDB Foundation's mission is to ensure the continuity of the MariaDB Server code as well as foster and facilitated collaboration within the MariaDB ecosystem. As part of GSoC, MariaDB Foundation seeks to bring more developers into the MariaDB Server (and related projects) code base.

  2026

  8

  Cycles

  11

  Projects

  47

  Trend

  CMySQLMariaDBPerl+6
• 

  MetaBrainz Foundation Inc

  Data

  The MetaBrainz Foundation is a non-profit that believes in free, open access to data. It has been set up to build community maintained databases and make them available in the public domain or under Creative Commons licenses.

  2026

  7

  Cycles

  11

  Projects

  67

  Trend

  PythonPostgreSQLJavaScriptPerl+7
• 

  National Resource for Network Biology (NRNB)

  Science and medicine

  The National Resource for Network Biology (NRNB, https://nrnb.org) organizes the development of free, open-source software technologies to enable network-based visualization, analysis, and biomedical discovery. Biomedical research is increasingly dependent on knowledge expressed in terms of networks, including gene, protein and drug interactions, cell-cell and viral-host communication, and vast social networks. Our technologies enable researchers to assemble and analyze these networks and to use them to better understand biological systems and, in particular, how they fail in disease. The NRNB mentoring organization includes projects such as Cytoscape (https://cytoscape.org/), WikiPathways (https://wikipathways.org/), SBML (https://sbml.org/), SBGN (https://sbgn.github.io/) and others. This is a great opportunity to work at the intersection of biology and computing! For example, Cytoscape is downloaded over 24,000 times per month by researchers. We take mentoring seriously and are proud of our 96% success rate (https://nrnb.org/alumni.html#gsoc-tab) with former students and projects. But don’t take our word for it, read testimonials from prior NRNB students (https://nrnb.org/testimonials.html#student-tab) and mentors (https://nrnb.org/testimonials.html#mentor-tab). Find out more about the software projects being developed in coordination with NRNB at our website (https://nrnb.org). Also refer to our GSoC page (https://nrnb.org/gsoc.html) for additional resources and application tips.

  2026

  7

  Cycles

  11

  Projects

  126

  Trend

  PythonJavaScriptJavaC+++10
• 

  NumFOCUS

  Science and medicine

  NumFOCUS supports and promotes world-class, innovative, open source scientific software. Most individual projects, even the wildly successful ones, find the overhead of a non-profit to be too large for their community to bear. NumFOCUS provides a critical service as an umbrella organization for this projects.

  2026

  27

  Cycles

  11

  Projects

  304

  Trend

  PythonJavaScriptRJulia+2
• 

  OpenAstronomy

  Science and medicine

  OpenAstronomy is a collaboration between open source astronomy, astrophysics & heliophysics projects that are used by researchers and software engineers around the world to study our universe either by analysing the data obtained from amazing instruments like the [James Webb Space telescope](https://jwst.nasa.gov/), the [Square Kilometer Array](https://www.skatelescope.org/) or the [Solar Dynamic Observatory](http://sdo.gsfc.nasa.gov/), developing very sophisticated numerical models (eg., [FLASH](http://flash.uchicago.edu/)) or designing interplanetary trajectories for human-made spacecraft. The analysis of such data helps multiple types of research, from being able to forecast solar storms to detecting planets in other stars, to understanding how galaxies are formed to explain the expansion and the origin of the universe.

  2026

  5

  Cycles

  11

  Projects

  82

  Trend

  CPythonJuliaNumPy+6
• 

  OpenStreetMap

  Data

  OpenStreetMap is a crowdsourcing project that creates and distributes free geographic data for the world. Our data is collected by hundreds of thousands of contributors around the globe and released with an open-content license. We allow free access not only to our map products, but all the underlying map data, which powers websites and apps used by billions of people worldwide.

  2026

  5

  Cycles

  11

  Projects

  50

  Trend

  JavaScriptJavaOpenGLRuby+9
• 

  OSGeo (Open Source Geospatial Foundation)

  End user applications

  The Open Source Geospatial Foundation (OSGeo) is a not-for-profit organization whose mission is to foster global adoption of open geospatial technology by being an inclusive software foundation devoted to an open philosophy and participatory community-driven development.<br/><br/>

  2026

  6

  Cycles

  11

  Projects

  107

  Trend

  CPythonOgc StandardsC+++6
• 

  R project for statistical computing

  Science and medicine

  R provides a wide variety of statistical and graphical techniques, and is highly extensible. R is often the tool of choice for research in statistical methodology.

  2026

  25

  Cycles

  11

  Projects

  237

  Trend

  CC++RFortran+2
• 

  RTEMS Project

  Operating systems

  RTEMS (Real-Time Executive for Multiprocessor Systems) is a free real-time operating system (RTOS) designed for deeply embedded systems such as automobile electronics, robotic controllers, and on-board satellite instruments.

  2026

  8

  Cycles

  11

  Projects

  54

  Trend

  CPythonEmbedded SystemsWaf+5
• 

  SageMath

  Science and medicine

  Mathematicians, scientists, researchers, and students need a powerful tool for their work or study. SageMath is a freely available open-source mathematical software system bundling the functionality of many software libraries, exposing their features in a common interface and extending on top of this with its own powerful algorithms. By leveraging the flexibility and universality of the underlying Python interpreter, SageMath is able to accommodate for a vast range of their requirements.

  2026

  4

  Cycles

  11

  Projects

  59

  Trend

  PythonCythonJavaScriptC+++2
• 

  ScummVM

  End user applications

  ScummVM is a game preservation project with a quickly growing code base since more than 20 years. Originally focused on 2D Point&Click adventure games, its scope widened in 2016 to RPG thanks to successful GSoC students and to 3D games in 2020 after the merge with its sister project, ResidualVM. The purpose is only to replace the game executable, not to enhance or replace the game assets.

  2026

  4

  Cycles

  11

  Projects

  38

  Trend

  OpenGLC++AssemblySdl+4
• 

  Sugar Labs

  End user applications

  Sugar is an activity-focused, free/libre open-source software (FLOSS) learning platform for children. Collaboration, reflection, and discovery are integrated directly into the user interface. Through Sugar's clarity of design, children and teachers have the opportunity to use computers on their own terms. Students can reshape, reinvent, and reapply both software and content into powerful learning activities. Sugar's focus on sharing, constructive criticism, and exploration is grounded in the culture of free software and the ideals of learn-by-doing "Constructionism".

  2026

  10

  Cycles

  11

  Projects

  99

  Trend

  PythonJavaScriptGTK+Android+9
• 

  The FreeBSD Project

  Operating systems

  FreeBSD is an operating system renowned for its advanced networking capabilities, robust security features, and exceptional performance. It is used across a wide spectrum of computing environments, ranging from the most heavily trafficked websites to desktop computers and embedded devices. Our source code is the foundation for well-known products such as the Sony PlayStation, Junos (the operating system powering Juniper routers), and elements of Apple's macOS. Additionally, FreeBSD runs on servers at Netflix that stream terabits of video content every second.

  2026

  11

  Cycles

  11

  Projects

  87

  Trend

  CC++LLVMShell Script+6
• 

  The Honeynet Project

  Security

  The Honeynet Project is a leading international 501c3 non-profit security research organization, dedicated to investigating the latest attacks and developing open source security tools to improve Internet security. With Chapters around the world, our volunteers have contributed to fight against malware (such as Conficker), discovering new attacks and creating security tools used by businesses and government agencies all over the world.

  2026

  8

  Cycles

  11

  Projects

  109

  Trend

  PythonAndroidMachine learningHTML+14

Contributor counts are accepted projects per cycle.