522 organizations since 2016

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  Accord Project

  Programming languages

  Accord Project champions the importance of contract text alongside computer-code when automating contracts. This is often referred to as Computable Contracts or Smart Legal Contracts.

  2026

  5

  Cycles

  5

  Projects

  18

  Trend

  JavaScriptReactCompilerOCaml+4
• 

  ArduPilot

  Science and medicine

  ArduPilot is the world's most widely used open source flight code software for unmanned autonomous vehicles including planes, multicopters, helicopters, cars, boats, submarines, blimps, antenna trackers and much more.

  2026

  3

  Cycles

  10

  Projects

  41

  Trend

  PythonROSC++Embedded+7
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  cBioPortal for Cancer Genomics

  Science and medicine

  The cBioPortal for Cancer Genomics is a resource designed to provide broad community access to cancer genomic data. It provides a unique user­-friendly and "biology­-centric computational user interface", with the goal of making genomic data more easily accessible to translational scientists, biologists, and clinicians. The interface was explicitly built and continues to evolve with careful usability studies involving multiple biological and clinical users, and an active and engaged user base.

  2026

  5

  Cycles

  8

  Projects

  43

  Trend

  JavaScriptJavaWebHTML+8
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  Ceph Foundation

  Data

  An open-source storage platform that implements storage on a single distributed computer cluster and provides a 3-in-1 interface for object-, block- and file-level storage.

  2026

  3

  Cycles

  9

  Projects

  34

  Trend

  PythonCC++Object-storage+5
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  CNCF

  Data

  Cloud Native Computing Foundation (CNCF) serves as the vendor-neutral home for many of the fastest-growing open source projects, including Kubernetes, Prometheus, and Envoy.

  2026

  5

  Cycles

  10

  Projects

  118

  Trend

  PrometheusGoKubernetesFluentd+8
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  CRIU

  Operating systems

  CRIU (stands for Checkpoint/Restore In Userspace), is a Linux software. It can freeze a running container (or an individual application) and checkpoint its state to disk. The data saved can be used to restore the application and run it exactly as it was during the time of the freeze. Using this functionality, application or container live migration, snapshots, remote debugging, and many other things are now possible. CRIU is packaged for all leading Linux distributions and it is integrated wit lots of popular projects such as Docker, Podman, LXC/LXD, OpenVZ, runc, open-mpi and others

  2026

  4

  Cycles

  8

  Projects

  22

  Trend

  LinuxDockerContainersKernel+5
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  Cuneiform Digital Library Initiative (CDLI)

  Science and medicine

  The Cuneiform Digital Library Initiative (CDLI) is a global collaboration of Assyriologists, museum curators, and historians working together to make the world’s earliest written records accessible online. CDLI focuses on cuneiform inscriptions dating back to the very beginning of writing around 3350 BC. Today, more than 500,000 such artifacts are held in museums and private collections worldwide, and CDLI has already digitally catalogued over 350,000 of them, helping researchers and the public explore humanity’s oldest written heritage.

  2026

  4

  Cycles

  6

  Projects

  34

  Trend

  PythonMariaDBRDFPHP+9
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  Dart

  Programming languages

  The Dart language gives you a fast developer experience and works on any platform. Dart powers hot reload enabling you to make a code change and instantly see results in your running app, and compiles to ARM and x64 machine code enabling quick app startup times for mobile, desktop and the web.

  2026

  5

  Cycles

  7

  Projects

  27

  Trend

  FlutterDartProgramming-language
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  DBpedia

  Data

  DBpedia is a crowd-sourced community effort to extract structured information from Wikipedia and make this information available on the Web. It allows for a global and unified access to Knowledge Graphs.

  2026

  5

  Cycles

  11

  Projects

  66

  Trend

  PythonJavaScalaRDF+6
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  Django Software Foundation

  Web

  Django is a high-level Python Web framework originally developed at the Lawrence-Journal World. Django was designed to handle two challenges: the intensive deadlines of a newsroom and the stringent requirements of the experienced Web developers who wrote it. It lets you build high-performing, elegant Web applications quickly.

  2026

  4

  Cycles

  11

  Projects

  23

  Trend

  PythonDjango
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  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
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  FLARE

  Security

  The Mandiant FLARE team is a collection of about 40 reverse engineers that analyze malware in support of threat intel, incident response, and computer forensic investigations. We spend our days using disassemblers, debuggers, decompilers, and emulators to figure out what malware does and how we can contain it. We’re known for delivering training sessions that share our experience and releasing open source software that automates the boring things. If you have even a passing interest in reverse engineering or malware analysis, reach out so that we can chat!

  2026

  4

  Cycles

  4

  Projects

  11

  Trend

  PythonIda-proGhidraSandbox
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  Fortran-lang

  Programming languages

  Fortran-lang is an open-source community that develops tools and libraries for modern Fortran development. Our flagship projects include the standard library, Fortran build system and package manager, as well as the interactive compiler, LFortran. Fortran-lang also provides an inclusive and welcoming space for all Fortran enthusiasts around the world to collaborate.

  2026

  4

  Cycles

  6

  Projects

  25

  Trend

  PythonCC++LLVM+2
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  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
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  FreeCAD

  End user applications

  FreeCAD is a general-purpose parametric 3D computer-aided design (CAD) modeler and a building information modeling (BIM) software application with finite element method (FEM) support. It is intended for mechanical engineering product design but also expands to a wider range of uses around engineering, such as architecture or electrical engineering. FreeCAD is free and open-source, under the LGPL-2.0-or-later license, and available for Linux, macOS, and Windows operating systems. Users can extend the functionality of the software using the Python programming language.

  2026

  5

  Cycles

  4

  Projects

  13

  Trend

  PythonC++QtOpencascade+1
• 

  GeomScale

  Science and medicine

  GeomScale is a research and development project that delivers open source code for state-of-the-art algorithms for problems at the intersection of data science, optimization, geometric, and statistical computing. The current focus of GeomScale is on scalable algorithms for sampling from high-dimensional distributions, integration, convex optimization, and their applications. One of our ambitions is to fill the gap between theory and practice by turning state-of-the-art theoretical tools in geometry and optimization to state-of-the-art implementations. Towards this goal, we will deliver various innovative solutions in a variety of application fields, like finance, computational biology, and statistics that will extend the limits of contemporary computational tools. GeomScale aims in serving as a building block for an international, interdisciplinary, and open community in high dimensional geometrical and statistical computing. The main development is currently performed in volesti, a generic open source C++ library, with R and python interfaces (the latter is hosted in package dingo), for high-dimensional sampling, volume approximation, and copula estimation for financial modelling. In particular, the current implementation scales up to hundred or thousand dimensions, depending on the problem. To our knowledge it is the most efficient software package for sampling and volume computation to date. It is, in several cases, orders of magnitude faster compared to packages that solve the same problems. It can be used to compute challenging multivariate integrals and to approximate optimal solutions in optimization problems. It has already found important applications in systems biology by analyzing large metabolic networks (e.g., the latest human network) and in FinTech by detecting shock events and by evaluating portfolios performance in stock markets with thousands of assets. Other application areas include AI and in particular approximate weighted model integration. Recent studies has shown a potential application of volesti methods in trustworthy AI, static analysis of programs and differential privacy.

  2026

  4

  Cycles

  7

  Projects

  34

  Trend

  PythonC++RJupyter+1
• 

  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
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  Global Alliance for Genomics and Health

  Science and medicine

  The Global Alliance for Genomics and Health (GA4GH) was formed to help accelerate the potential of genomic medicine to advance human health. It brings together over 400 leading genome institutes and centers with IT industry leaders to create global standards and tools for the secure, privacy respecting and interoperable sharing of Genomic data.

  2026

  4

  Cycles

  10

  Projects

  49

  Trend

  PythonJavaSQLProtobuf+10
• 

  GNU Compiler Collection (GCC)

  Programming languages

  The GNU Compiler Collection (GCC) is an optimizing compiler produced by the GNU Project supporting various programming languages, hardware architectures and operating systems. It includes front-ends for C, C++, D, Objective-C, Fortran, Ada, and Go, as well as libraries for these languages (such as libgcc and libstdc++). Modula-2, Rust, Cobol, and Algol 68 front-ends are under development too. GCC includes a Static Analyzer, and supports OpenMP, OpenACC with code offloading to Nvidia and AMD GPUs.

  2026

  5

  Cycles

  9

  Projects

  39

  Trend

  CC++OpenMPGNU Autotools+2
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  GNU Image Manipulation Program

  End user applications

  GIMP is a cross-platform image editor available for GNU/Linux, macOS, Windows and more operating systems. It is free software, you can change its source code and distribute your changes.

  2026

  4

  Cycles

  5

  Projects

  14

  Trend

  CGegl
• 

  GNU Project

  Operating systems

  GNU is an operating system consisting entirely of free software, meaning it respects users’ freedom. The GNU operating system consists of GNU packages, which are programs released by the GNU Project, as well as free software released by third parties. The development of GNU made it possible to use a computer without relying on software that restricts or undermines user freedom. The GNU Project is the collective organization of maintainers and developers, webmasters, translators, and other contributors who develop and maintain more than 400 programs that together form the GNU operating system.

  2026

  5

  Cycles

  8

  Projects

  64

  Trend

  CPythonPosixLisp+10
• 

  GNU Radio

  Science and medicine

  GNU Radio is a free & open-source software development toolkit that provides signal processing blocks to implement software radios. It can be used with readily-available low-cost external RF hardware to create software-defined radios, or without hardware in a simulation-like environment. It is widely used in research, industry, academia, government, and hobbyist environments to support both wireless communications research and real-world radio systems.

  2026

  3

  Cycles

  11

  Projects

  21

  Trend

  PythonC++DspSoftware Radio+5
• 

  gprMax

  Science and medicine

  gprMax is open source software that simulates electromagnetic wave propagation. It uses Yee's algorithm to solve Maxwell’s equations in 3D using the Finite-Difference Time-Domain (FDTD) method.

  2026

  3

  Cycles

  6

  Projects

  21

  Trend

  PythonCythonCUDAOpenMP+2
• 

  Haiku

  Operating systems

  Haiku is a fast, efficient, easy to use and lean open source operating system inspired by the BeOS that specifically targets personal computing.

  2026

  3

  Cycles

  9

  Projects

  29

  Trend

  C++PosixFFmpegBsd Unix+5

Contributor counts are accepted projects per cycle.