Home | GSoC Organizations

Science and medicine

The 3D Toolkit provides algorithms and methods to process 3D point clouds

cc++rosopencvcmake1 more

52°North Spatial Information Research GmbH

Science and medicine

Innovative ideas & technologies in geoinformatics

2025202420232022202120202019201820172016

javascriptjavaweb servicesogc standardsweb6 more

State of the art fuzzing for better security

202520242023202220212020

cc++llvmfuzzingqemu3 more

End user applications

Australian Umbrella Org for Open-Source Projects

202520242023202220212020201920182017

scalaandroid/ioshtmlcssjavascript13 more

AOSSIE - The Australian National University's Open-Source Software Innovation and Education

Science and medicine

Research-Intensive Open-Source Projects at Australia's Leading University

pythonpostgresqlllvmscalalisp

API Client Tools at Google

Programming languages

Industry-leading user experiences for networked APIs.

restopenapigrpcprotocol buffersrpc

Development tools

Next-gen Open Source AI powered API DevTool

flutterapiaidartui/ux

Science and medicine

Equation-solving software for engineering system modelling

Scan code for origin, license and vulnerabilities

20252024202320222021202020192017

pythonjavascriptcc++shell script10 more

Academy Software Foundation

Creating amazing OSS for Media & Entertainment.

pythoncc++openglrust

Programming languages

Open source software for smart legal contracts

2025202420212020

javascriptreactcompilerocamlcoq3 more

AerospaceResearch.net

Science and medicine

making space together

20212020201920182017

pythoncc++vhdlboinc5 more

Science and medicine

Many Traditions, One Alaska

pythonmysqljavamatlabdicom

Operating systems

Making Home Networking and Storage Simple

2020201920182017

androidruby on railsgolangrestful apistreaming4 more

Android Graphics Tools Team

Programming languages

Providing excellent tools for graphics developers and driver makers

cc++javaopenglvulkan3 more

AnitaB.org Open Source

Women transform technology. Technology transforms the world.

pythonjavascriptandroidios

End user applications

AnkiDroid makes remembering things easy

2025202420222021

javascriptandroidjavagradlerust2 more

Apache DataFusion

Foundational library for DBs and compute engines

pythonrustsqlarrow

Science and medicine

A free/open-source machine translation platform

20242023202120202019201820172016

pythonperlc++xmlfinite-state technologies4 more

Apertus Association

Science and medicine

open source cinema

202220212020201920182017

clinuxfpgac++vhdl4 more

Programming languages

ArchC is an Architecture Description Language

Science and medicine

World's most advanced autonomous vehicle software

202520242023202220212020201920182017

pythonrosc++embeddedrtos6 more

Programming languages

Open source electronic prototyping platform

cc++golangarduino

Programming languages

Building the future of Event-Driven Architectures

javascriptjavagotypescriptRAML

End user applications

Free, open source, cross-platform audio software

c++qtcmakewxwidgetsVST

3D CAD & other computer-aided tech (CAx)

2025202420232022202120202019201820172016

pythoncc++openglopencl5 more

Programming languages

Babel, the community driven compiler for writing next generation JavaScript

javascriptnode.jsbabel

Programming languages

Build and test software of any size, quickly and reliably

linuxjavagocc++2 more

BeagleBoard.org

Science and medicine

Open hardware computing for educators and makers

2025202420232022202120202019201820172016

cpythonlinuxjavascriptbeaglebone14 more

Programming languages

From distributed systems, to robust servers and language design on the Erlang VM

xmpperlangelixirbeammqtt1 more

BeeWare Project

Programming languages

Tools for cross-platform Python application development.

pythonandroidiosmobilejavascript1 more

End user applications

Bench-routes is an open-source project to analyze performance and monitor APIs.

reactgolangdocker

Berkman Klein Center for Internet and Society

Exploring cyberspace, sharing in its study, & helping to pioneer its development

2019201820172016

javascriptruby on railsgometeor.jssql/nosql5 more

Science and medicine

ARA is an employee-owned scientific research and engineering company.

pythoncc++cmakec++11

Science and medicine

BioJS is an open source project that visualizes biological data using JavaScript

pythonjavascript

Biomedical Informatics, Emory University

Science and medicine

Department of Biomedical Informatics (BMI), Emory University School of Medicine

pythonjavadeep learningmedical imaginghadoop1 more

Blender Foundation

End user applications

The Freedom to Create

2025202420232022202120202019201820172016

cpythonopenglc++opencl1 more

Boost C++ Libraries

Programming languages

Boost provides free peer-reviewed portable C++ source libraries

20212020201920182017

c++c++11c++14boostc++172 more

Boston University / XIA

Infrastructure and cloud

Crowdsourcing the future Internet

clinux kernelxiaadvanced data structuresddos

End user applications

Building m-Learning applications

pythondjangobootstrapandroid

Programming languages

Making Embedded Linux easy

pythonshellgnu makekconfig

C2SI develops FOSS softwares for everyone!!!

pythonjavagonode.jstensorflow

Programming languages

Trustworthy software intensive systems for critical functions.

javascalabytecode

Science and medicine

We develop Biomedical and Clinical informatics applications

pythonjavascriptflasktensorflowreactjs

CCExtractor Development

End user applications

TV, Rust, Flutter, Linux, VR and C. In any order.

2025202420232022202120202019201820172016

clinuxvideoffmpegsubtitles12 more

Science and medicine

The SFT is part of CERN (European Organization for Nuclear Research).

pythonjavascriptc++clang

Science and medicine

Umbrella for Particle Physics-related projects

202520242023202220212020201920182017

pythoncc++machine learningdata analysis5 more

Science and medicine

C++ library of computational geometry

202520242023202220212020201920182017

githubc++gitpythonswig2 more

Community Health Analytics Open Source Software

202520222021202020192018

javascriptpython 3pythonmysqljupyter11 more

Programming languages

Open source IP, tools & standards for ASIC/FPGA

fpgachiselrisc-vsystemverilogASIC

CLiPS, University of Antwerp

Computational Psycholinguistics

pythonjavascriptmachine learningmongodb

Fast, Accurate, Flexible Open Source Speech Recognition

cpythonjavascriptcross-platformhidden markov models

Building sustainable ecosystems for cloud native

202520242023202220212020201920182017

prometheusgokubernetesfluentdgrpc7 more

Operating systems

Chekpoint/Restore for Linux tasks and containers

2025202420232022202120202019

linuxdockercontainerskernelc4 more

Computer Vision Data Annotation Platform for AI

pythondjangoreactkubernetestypescript

CVXPY is a Python-embedded modeling language for convex optimization problems.

End user applications

Transforming the way land & resource rights are documented, managed and stored.

pythondjangojavascjavascript

Canadian Centre for Computational Genomics

Science and medicine

Analytical solutions for Next-Generation Sequencing data

2020201920182016

pythonjavascriptsqlgitr-project6 more

Carbon Language

Programming languages

An experimental successor to C++

llvmc++clangBison

Authorization library that supports RBAC and ABAC

pythonjavascriptgoreactrust5 more

Programming languages

Painless multi-threaded multi-core programming for Ruby.

rubymulti-threadingmulti-corezeromqhigh-resolution timers

Center for Research in Open Source Software (CROSS)

Science and medicine

Amplifying Research Imapct through Open Source

2022202120192018

pythonjavascriptc++hadoopceph7 more

Center for Translational Data Science

Science and medicine

Develop translational data science.

pythonawsgolangdockerpostgres2 more

Ceph Foundation

The Future of Storage

20252024202320222021202020172016

pythoncc++object-storagejavascript4 more

Programming languages

A Productive Parallel Programming Language

20212020201920172016

cpythonc++chapelhigh performance computing

Checker Framework

Prevent programming errors via simple verification

20252020201920182017

javacompilersVerificationformal methodstype systems

Operating systems

Fast, seamless, safe, and reliable web for all

20252024202320222021

pythonjavascriptjavac++git

Infrastructure and cloud

eBPF-based Networking, Security, and Observability

clinuxgokubernetesebpf

CircuitVerse.org

Science and medicine

Build and learn logic circuits in the cloud!

2025202420232022202120202019

postgresqljavascriptbootstraprailshtml5 canvas6 more

Empowering Boston's residents through technology

pythonjavascript

End user applications

Growing and sustaining relationships

20212020201920182016

mysqljavascriptphpangularjsd3js2 more

Classical Language Toolkit

NLP for the Ancient World

pythonjavascriptjava

Programming languages

Supporting the Clojure and ClojureScript ecosystem

javascriptclojureclojurescriptjvmfunctional programming

Building platforms for reproducible AI Research

202520242023202120202019201820172016

pythonjavascriptluacaffetorch12 more

Cockpit Project

Operating systems

Cockpit is an interactive server admin interface

pythonjavascriptreact

Computational Biology @ University of Nebraska-Lincoln

Science and medicine

Tool development in bioinformatics, computational biology, data visualization

2019201820172016

mysqljavascriptreactwebgljava3 more

Computational Science and Engineering at TU Wien

Science and medicine

We bundle TU Wien's open source efforts in the area of science and engineering

javascriptjavac++htmlcss

Continuous Delivery Foundation

Programming languages

Open-source community seeking to deliver software with security & speed

tektonspinnakerci/cdscrewdriverjenkins2 more

Conversations.im

Social and communication

An open source instant messaging client and ecosystem based on Jabber & XMPP

pythonandroidjavaxmppjavafx2 more

Game libraries, frameworks, and development toolkits

cpythonopengljavascriptxmpp

Creative Commons

Nonprofit building a global digital commons.

2024202320202019

pythonpostgresqljavascriptelasticsearchwordpress4 more

Cuneiform Digital Library Initiative (CDLI)

Science and medicine

Curating humanity's oldest written sources

20222021202020192018

pythonmariadbrdfphpnltk8 more

D Language Foundation

Programming languages

Write fast, read fast, and run fast.

c++dlanglinuxosxwindows4 more

Science and medicine

Global and Unified Access to Knowledge Graphs.

2025202420232022202120202019201820172016

pythonjavascalardfnosql5 more

Programming languages

Dart is a client language for apps on any platform

202520242023202220212020

flutterdartprogramming-language

Data for the Common Good

Connect. Share. Discover.

pythonjavascriptkubernetesreactjsterraform

High-performance AI+Cloud infrastructure provider.

rustkubernetesDistributed key-value storeFault tolerantMetadata management

Operating systems

The Universal Operating System

20252024202220212020201920182016

cpythondjangorubyc++6 more

Science and medicine

Democratize AI for drug discovery.

pythonnumpypytorchHuggingFace

Open-source Conversational AI Stack

pythontensorflowdockerpython deep learning frameworkspytorch

Department of Biomedical Informatics, Emory University

Biomedical research to advance healthcare

20252024202320222021

pythonjavatensorflowmedical imagingdeeplearning5 more

Developers Italia

An open community of digital public services developers

pythoncc++javaruby6 more

Digital Impact Alliance (DIAL) at UN Foundation

Open source projects for humanitarian work, international development, and peace

2021202020192018

pythonjavascriptandroidjavaphp3 more

Social and communication

Civilized discussion for your community.

javascriptruby on railsrubydockerember2 more

Distributed and Unified Numerics Environment (DUNE)

Science and medicine

DUNE is a modular toolbox for solving PDEs with grid-based methods.

Django Software Foundation

Web framework for perfectionists with deadlines

2025202420232022202120202019201820172016

Drupal Association

Build Bold Digital Experiences on Best Open Source

202520242023202220202019201820172016

javascripthtml5sqlphpsymfony8 more

Earth Science Information Partners

Science and medicine

Supporting community development of visionary Earth science data technology.

pythonjavascriptkubernetesdaskxarray3 more

Eclipse Foundation

Programming languages

The Global Open Source Foundation

202520242023202220202019201820172016

cc++javageospatialgeo14 more

Programming languages

Eclipse Vert.x is a tool-kit for building reactive applications on the JVM

javascriptjavagroovymicro-servicesreactive4 more

We are the creators of Elasticsearch, Kibana, Beats, and Logstash.

javareactnode.jsgolangjruby

End user applications

Cross-platform desktop apps with web technologies

javascriptnode.jsc++typescriptChromium

Elm Software Foundation

Programming languages

A delightful functional language for reliable webapps.

javascripthaskellelm

Programming languages

Improving your Elm experience!

functional programmingtypescriptelm

Operating systems

Modular and configurable OS for embedded applications

Environmental Data And Governance Initiative

International network addressing threats to US environmental & energy policy

pythonjavascriptruby on railsgoogle cloudgo

Erlang Ecosystem Foundation

Programming languages

Supporting the Beam community

erlangelixirbeamlfe

Programming languages

Eta is a dialect of Haskell on the Java Virtual Machine.

Record, convert and stream audio & video

2025202420232022202120202019201820172016

cgitasmassemblyassembler1 more

Industry leading malware analysis

pythonida-proGhidraSandbox

Programming languages

The organization that handles all aspects of the FOSDEM conference

postgresqlruby on railsgithtmlcss4 more

Science and medicine

Free and Open Source Software in Asia

202520242019201820172016

pythonjavascriptandroidjavajson api5 more

Open Source License Compliance by OSS

20252024202320222021202020192018

linuxpostgresqlcc++php8 more

Routing suite including BGP, IS-IS, LDP, OSPF, PIM

clinuxluanetworkinglinux kernel1 more

Operating systems

Freedom, Friends, Features, and First.

202520202019201820172016

pythonpostgresqljavascripthtml5flask16 more

Operating systems

Reading, writing, verifying, erasing flash chips

Forschungszentrum Jülich

Science and medicine

Shaping change: open source for Big Science

pythonmpihigh performance computingpytorchgpu

Programming languages

High-performance parallel programming language

20252024202320222021

pythoncc++llvmcompiler1 more

FrameNet Brasil (UFJF)

Natural Language Understanding with structured computational semantics

pythonmysqljavascriptphp

Free UK Genealogy

Human transcription of family history data

pythonmysqlmongodbruby on railscss1 more

Free and Open Source Silicon Foundation

Working together for Free and Open Source Silicon

2025202420232022202120202019201820172016

pythonjavascriptfpgacompileropen hardware9 more

End user applications

Cross-platform 3D parametric modeler

pythonc++qtOpenCASCADEOpenInventor

Programming languages

FreeType is a software library to render fonts.

20242023202220212020201920182017

cfontsopentypelibrarypython4 more

End user applications

Edit music scores with GNU LilyPond.

Security scanning tool for Google Cloud

pythongoogle cloud

Programming languages

The cross-platform game engine designed for everyone.

javascriptcc++reactweb development1 more

GENIVI Alliance

Developing open software for IVI and the connected car.

clinuxc++qtyocto4 more

GNOME Foundation

Operating systems

A diverse and sustainable free software desktop.

2025202420232022202120202019201820172016

cpythonjavascriptgtk+gobject5 more

Science and medicine

An open source GNSS software-defined receiver

202520242022202120202019201820172016

cc++c++11c++14gnss4 more

GNU Compiler Collection (GCC)

Programming languages

20252024202320222021202020192018

cc++openmpgnu autotoolsgnu make

GNU Image Manipulation Program

End user applications

GIMP is a cross-platform image editor

2025202420232022

GNU Mailman Project

Social and communication

GNU Mailman is a mailing list manager popular in open source projects.

pythondjangoemailpython 3rest2 more

Science and medicine

Free Your Numbers

2025202420232022202120202019201820172016

Operating systems

Development of the GNU Operating System

2024202320202019201820172016

cpythonposixlispeiffel8 more

Science and medicine

The free & open software radio ecosystem

2025202420232022202120202019201820172016

pythonc++dspsoftware radiorf4 more

C multimedia framework

javascriptc++mp4dashmp4box2 more

Programming languages

Domain specific language for audio

2025202420232022

cpythonjavascriptc++typescript1 more

GRR Rapid Response

GRR Rapid Response is an incident response framework for remote live forensics.

python 3angulartypescriptmaterialuibackend

Gambit - Software Tools for Game Theory

Science and medicine

Software for Analysis of Game Theory Models

Cluster virtual server management software

pythonxenhaskellkvmvirtualization

Genes, Genomes and Variation

Science and medicine

Authoritative databases of genome sequences and their function

2019201820172016

mysqljavascriptperlpythonrest

Genome Assembly and Annotation

Science and medicine

Providing freely accessible genomic data

pythonmysqljavascriptrustpytorch2 more

Gentoo Foundation

Operating systems

A flexible, source-based Linux distribution.

20232022202120202019201820172016

pythoncc++perlshell script5 more

Science and medicine

Scalable geometric and statistical software

202520242023202220212020

pythonc++rjupytergithub-actions

Programming languages

Fast,Scalable,Distributed revision control system

2025202420232022202120202019201820172016

cshell scriptgitshellc language

How people build software

rubynode.jsgitatomc#

Infrastructure and cloud

Everyone can contribute

2025202320222021

rubygolanggitcidevops4 more

Global Alliance for Genomics and Health

Science and medicine

We develop genomics tools to benefit human health

202420232022202120202019201820172016

pythonjavasqlprotobufmongodb9 more

Programming languages

C library implementing TLS and DTLS

cCryptographyTLS

End user applications

Multi-platform 2D and 3D game engine

20222021202020192018

openglgithubc++cppcrossplatform5 more

Google DeepMind

Artificial Intelligence

Google DeepMind's open-source projects

pythonjavascripttypescriptJaxGemma

Google FHIR SDK

Science and medicine

This work is a partnership between Google, WHO, Ona and other health partners

androidkotlinsqlitefhirmaterialui

GraphQL Foundation

GraphQL is a fast and efficient query language for APIs.

javascriptreactnode.jsgraphql

End user applications

Editor, graphics engine, & compiler for art/design

machine learningrustvulkanaiwebgpu

Green Navigation

Energy efficient routing for electric vehicles

postgresqljavascriptgopolymerelectromobility4 more

Operating systems

Operating system that targets personal computing.

20242023202220212020201920182017

c++posixffmpegbsd unixwebkit4 more

Programming languages

A language for fast, portable computation on images and tensors

Programming languages

Purely functional programming language

2025202420222021202020192018

haskellghccabalcodeworldservant1 more

In-Memory Computing Platform

javadistributed systems

Health Information Systems Programme

Health information system which is being used by 47 countries across world.

javascriptandroidjavagradlereactjs

Programming languages

The Missing Package Manager for macOS (or Linux)

20222020201820172016

rubygitosxgithubbash3 more

AI for the Arts and the Humanities

pythonmachine learningc++data analysisartificial intelligence

Hydra Ecosystem

Automate REST APIs. Build next generation API clients.

2021202020192018

pythonflaskrdfhydrajson/json-ld7 more

Science and medicine

An open & FAIR neuroscience standards organization

2025202420232022202120202019201820172016

pythonjavascriptjavac++gpu5 more

Science and medicine

Our eyes on the ocean, coasts, and Great Lakes

2025202420222021

pythonbig data scienceocean technologyocean sciencejava3 more

Inclusive Design Institute

End user applications

The IDI addresses the challenge of designing ICT to work for all potential users

javascripthtml5node.jscssjquery2 more

End user applications

Improving Information Infrastructure and Access to Knowledge in Indian languages

pythonjavascriptandroidruby on railsc++

End user applications

2025202420232022202120202019201820172016

pythonc++csssvggtk+4 more

Inria Foundation

Science and medicine

SOFA is an efficient simulation engine for research in medical simulation.

cc++qtasmwebassembly1 more

Institut für Angewandte Informatik (InfAI) e.V.

Putting scientific research into practice.

javascriptjavaa-frameneo4jhtc vive

Institute for Artificial Intelligence

Science and medicine

Research in Artificial Intelligence for Autonomous Mobile Robots

pythonrosc++lispprolog1 more

Intel Video and Audio for Linux

We enable Linux Audio and Video for Intel

202220212020201920182017

videodecodeencodevppmultimedia15 more

Science and medicine

Integrating biological data sources, making it easy to query and analyse data

pythonpostgresqljavascriptjavaclojure1 more

International Catrobat Association

Programming languages

Free visual coding apps for computational thinking

2025202420232022202120202019201820172016

javascriptandroidjavahtml5web7 more

Internet Archive

Science and medicine

Universal Access to All Knowledge

20252024202320212020201920182017

pythonjavascriptpthonnode.jsphp4 more

Internet Health Report

Science and medicine

Monitoring the Internet

2025202420232022

pythonjavascriptapache kafkavue.js

Internet Systems Consortium

We support the infrastructure of the Internet with Open Source

mysqlcc++restdhcp4 more

Science and medicine

3D Medical visualization and neuronavigation tool

pythoncythonnumpydicomVtk

Ivy (lets-unify.ai)

All of AI, at your Fingertips.

pythoncythontensorflowpytorchJax

Artificial Intelligence

Python libraries for large-scale machine learning

pythonmachine learningai

JBoss Community

Community of projects around JBoss Middleware

2022202120202019201820172016

androidjavaideasciidoctoraerogear9 more

Programming languages

Java library that provides graph data-structures and algorithms.

JSK Robotics Laboratory / The University of Tokyo

Science and medicine

JSK is focusing on the fundamental functions & systems for intelligent robots

2019201820172016

roseuslispopenhrpopenrtmlisp1 more

We enable the reliable use of JSON data format.

pythonjavascripttypescript.netJSON Schema

Science and medicine

Stay on top of your Literature

20252024202220212019

javajavafxlatextypescriptbibtex1 more

Toolkit for developing Robotics applications

202520242023202220212020201920182017

pythoncc++rosgazebo2 more

Programming languages

Jenkins, build great things at any scale

20252024202320222020201920182016

javagroovyhtmljenkinscss5 more

Infrastructure and cloud

Accelerate Your Continuous Delivery on Kubernetes

golangkubernetesgitops

Multimodal AI from the community, for everyone

pythonmachine learningmicroservicesdata scienceMultimodel AI

State-of-the-art video conferencing

20252024202220182017

javascriptjavaxmppwebrtcsip3 more

End user applications

The flexible platform empowering website creators.

2025202220212019201820172016

javascripthtmlphpcssjquery3 more

End user applications

The secure note taking application

2024202220212020

reactnode.jsreact nativeelectronterminal-kit3 more

End user applications

K-9 Mail – Advanced Email for Android

End user applications

Control your digital life

2025202420232022202120202019201820172016

c++qtcmakephpqt55 more

Open for Innovation

javascriptjavatensorflow

Programming languages

Templated configuration management for Kubernetes, Terraform and other things

pythonkubernetesjsonnetjinja2terraform1 more

Distributed version-control for geospatial data

pythonc++gitgis

Programming languages

Unit, API test generation agent using AI & EBPF

javagolangnode.jsMERNepbf2 more

Infrastructure and cloud

Event-driven orchestration of cloud-native apps

golangkubernetesangularHelm

End user applications

Internet content available offline.

2025202420232021202020192018

pythonandroidjavac++qt8 more

End user applications

The ultimate entertainment center

202220212020201920182017

pythonxmlc++11gitdrupal7 more

KolibriOS Project Team

Operating systems

A tiny and fast operating system in fasm

fasmflat assemblerx86 assemblyi386i5864 more

Programming languages

Advancing Computer Vision & Spatial AI, Openly

cudarustdeep learningdata scienceSpatial AI

Kotlin Foundation

Programming languages

Advance the Kotlin programming language

gradlekotlinjvmParsers & CompilersMultiplatform

Infrastructure and cloud

Building a virtualization API for Kubernetes

Infrastructure and cloud

The Machine Learning Toolkit for Kubernetes (AI)

pythontensorflowkubernetesjupyter notebookkustomize3 more

Social Participation to Reach Millions

pythonmachine learningruby on railsjupyter hub

LEAP Encryption Access Project

End user applications

Privacy should not be a priviledge

pythonjavascripttwistedopenvpngnupg5 more

LLVM Compiler Infrastructure

Programming languages

LLVM Compiler Infrastructure

2025202420232022202120202019201820172016

cllvmc++clangmlir

Operating systems

Programming Language Research with emphasis on Lua

20252024202120202019201820172016

luacéuelasticsearchluarocksnetbsd3 more

Learning Equality

End user applications

Building equity in education to transform lives

20252024202320222021

pythonjavascriptdjangovue.js

Libre Space Foundation

Science and medicine

Open-source software and hardware technologies for space

pythondjangocc++arduino6 more

LibreCube Initiative

Science and medicine

Open Source Space Exploration

pythonmicropythonzmqmbedmongodb3 more

Science and medicine

Healthcare for Humanity

2023202220212020201920182017

mysqljavascriptjavaphpwebcomponents4 more

End user applications

LibreOffice is a free and open source office suite

2025202420232022202120202019201820172016

pythonandroidjavaopenglc++

Infrastructure and cloud

Linkerd is the ultralight service mesh for Kubernetes and beyond

prometheusreactrustgolangkubernetes1 more

Liquid Galaxy project

We code immersive and interactive apps with GEarth

202520242023202220212020201920172016

javascriptrosgiscesiumcesiumjs12 more

Programming languages

The Lua package manager and ecosystem

lualuarocksclinuxwindows1 more

Science and medicine

Open Source Multibody Simulation

20252024202220212020201920172016

c++pythonscriptingc

Science and medicine

Analysis of molecular simulations data with Python

202520242023202220212020

pythoncythoncc++numpy

MGGG Redistricting Lab

End user applications

MGGG researches applications in math and computer science for US redistricting

pythonjavascriptjuliagismapping1 more

MIT App Inventor

Development tools

Anyone can build apps with global impact

202520242023202220212020201920172016

androidjavahtmljavascriptgwt5 more

Science and medicine

Open-source software for mass spectrometry

MZmine and MS-DIAL

Science and medicine

Open-source software for mass spectrometry

End user applications

Open Source package manager for macOS.

2020201920182017

makegittclhtmljavascript8 more

Machine Learning for Science (ML4SCI)

Science and medicine

Machine learning applications in science

20252024202320222021

pythoncc++machine learningdata analysis1 more

Stream Processing for Operational Analytics

javaRxjavaAkkaNetty

MapAction works on maps and data analysis for the humanitarian sector

pythondata analysisgisapache airflowvisualization

The fastest growing Open Source Database

2025202420232022202120202019201820172016

cmysqlmariadbperljava4 more

Webapp providing a UX-first interface to databases

pythonpostgresqljavascriptdjangosvelte

End user applications

Open, secure, decentralised communication

2022202120202019201820172016

pythonandroidreactgolangios7 more

End user applications

Free your Marketing with Open Source!

mysqlphpsymfony

Mayor's Office of New Urban Mechanics

Exploring new approaches to civic life.

pythonjavascriptrubytensorflow

McGill Space Institute

Science and medicine

Center bringing together scientists doing space-related research at McGill

pythonsqlbig datadatabases

Media Cloud is an open-source platform for media analysis.

pythonpostgresqljavascriptreactdocker

Live ML anywhere

pythonjavascriptandroidc++ios

Infrastructure and cloud

the extensible, collaborative, Kubernetes manager

javascriptgolangkubernetesvisual design

MetaBrainz Foundation Inc

Open music / book metadata, music recommendations

2025202420232022202120202019201820172016

pythonpostgresqljavascriptperlpostgres6 more

Programming languages

Simplifying the embedding of programming languages

2024202320222021

pythonjavascriptcc++cmake4 more

World’s most used penetration testing framework

202320222021202020182017

crubyasmpythonpostgresql1 more

Micro Electronics Research Lab - UITU

Accelerating Engineering Innovation

2025202420232022

RISCVProcessorHardwaresystemonchipmemory

Microkernel devroom

Operating systems

Confederation of microkernel projects (Genode, HelenOS, GNU Hurd, MINIX, Redox)

End user applications

DJ Mixing App With Powerful Features For All DJs

2025202420222020201820172016

openglc++qtc++11audio8 more

Mobile Robot Programming Toolkit (MRPT)

Science and medicine

Empowering C++ development in robotics

rosopencvc++qtcmake5 more

ModSecurity cross platform web application firewall

wafweb application firewall

Programming languages

Moira is a realtime alerting system based on Graphite data

javascriptgolanggrafanatypescriptgraphite1 more

Monado, the free and open source XR platform

openglvulkanopenxrGraphicsXR

Programming languages

Cross-platform C#/F#/.NET runtime and tools

Social and communication

Empowering educators to improve our world

2019201820172016

mysqlpostgresqljavascriptphpjquery3 more

Science and medicine

Moving robots into the future

20242023202220212020

rosc++cpython 3robotics2 more

Keeping the Internet open and accessible to all.

20202019201820172016

pythonjavascriptc++rusthtml4 more

End user applications

The World’s Most Popular Music Notation Software

202420232022202120202019201820172016

cc++qtqmlc++115 more

Empowering lives through non-visual access to technology

pythonc++ui automationiaccessible2win32 api

Named Data Networking Project

A Content-Centric Future Internet architecture

javascriptandroidjavac++14c#

National Resource for Network Biology (NRNB)

Science and medicine

Developing open source tools for network biology

2025202420232022202120202019201820172016

pythonjavascriptjavac++php8 more

Modern music server and streamer compatible with Subsonic/Airsonic

reactgolangffmpeg

End user applications

hyperextensible Vim-based text editor

2025202020192018

cpythonjavascriptluavim1 more

Netfilter project

Operating systems

Firewalling, NAT and packet mangling for Linux

2019201820172016

networkinglinux kernelfirewallclinux1 more

Netty is an asynchronous event-driven network framework

Neuroinformatics Unit

Science and medicine

Open-source tools for neuroscience and ML

pythonnumpypytorchScipynapari

Lightweight cross-platform desktop app framework

cjavascriptnode.jsc++typescript

Programming languages

An integrated testing framework powered by Node.js

javascriptseleniumnode.jstypescriptWebDriver

NixOS Foundation

Programming languages

Declarative builds and deployments

Nmap Security Scanner

Swiss Army knife of network discovery and security auditing

Science and medicine

NumFOCUS promotes open source scientific software.

2025202420232022202120202019201820172016

pythonjavascriptrjuliac1 more

OSGeo (Open Source Geospatial Foundation)

End user applications

The Open Source Geospatial Foundation

2025202420232022202120202019201820172016

cpythonogc standardsc++sql5 more

OSU Open Source Lab

OSU Open Source Lab

pythonjavascriptrubyrest

The open source community for infrastructure software.

javaperlmiddlewarebpmwiki

OWASP Foundation

No more insecure software.

202520242023202220212020201920182016

pythonjavascriptjavahtmlphp9 more

Open Bioinformatics Foundation (OBF)

Science and medicine

Open Source & Open Science in biological research

2022202120202019201820172016

pythonjavahaskellrubyperl10 more

Science and medicine

Advancing Open Source & Open Science for Chemistry

202420232022202120202019201820172016

pythonjavascriptopenglc++webgl5 more

Open Chromosome Collective

Science and medicine

Open-Source Tools for 3D Genomics Research

pythonnumpyscikit-learnpandasHDF5

Open Climate Fix

Science and medicine

Using Computers to Fix Climate Change

End user applications

Open Data Kit is used to collect data for social good in difficult environments.

pythonjavascriptandroidjavaruby

Open Detection is a open source project for object detection and recognition.

cc++opencvcmakecaffe1 more

Science and medicine

Open-source electrophysiology

Open Food Facts

Science and medicine

Better food choices for your health & the planet

androidmachine learningmongodbperlios4 more

Open Genome Informatics

Science and medicine

Open access genomics and bioinformatics projects

202320222021202020172016

pythonjavanode.jsgwthtml7 more

Open HealthCare Network

Science and medicine

Reimagining Healthcare Delivery

pythondjangoreacttypescriptNextJs

Programming languages

Open Roberta® Lab is an online IDE introducing kids to program robots with NEPO®

2021202020192018

javascriptjavapythongoc++1 more

End user applications

Open source robotics and a whole lot more!

202520242023202220212020201920182016

rosgazebopythonjavascriptc3 more

Open Science Initiative for Perfusion Imaging

Science and medicine

Open access resources for perfusion imaging

Open Science Labs

Science and medicine

The community open to science and technology.

pythonjavascriptc++dockerAST

Open Source State Legislative Data

pythonpostgresqljavascriptdjangoreact1 more

Open Technologies Alliance - GFOSS

Science and medicine

Promote Open Standards and Open Source

20252024202320222021201920182017

pythonmysqljavaphpvirtuoso13 more

Open Transit Software Foundation

End user applications

Help make public transit better

androidjavagolangdockerios

A Modern Library for 3D Data Processing

pythonc++cudatensorflowpytorch

Operating systems

An open source distributed filesystem.

cpythongitansiblefilesystems2 more

Science and medicine

Look at the Universe with the power of Open Source

2025202420232022202120202019201820172016

cpythonjulianumpyqt5 more

++ beneficial uses of computer vision in society

202520242023202220212020201920172016

pythonmachine learningc++computer visiondeep learning7 more

Infrastructure and cloud

Planet Scale Tracing and Monitoring

pythonjavagorubynode.js

OpenELIS Global

Science and medicine

Empowering labs to Ensure Quality Health Care

postgresqljavascriptjavareactspring

Science and medicine

OpenEMR is a leader in healthcare open-source software

mysqljavascripthtmldockerphp

Multi-Platform Open Source driver for AR/VR/XR devices with stable ABI.

openglopencvvulkanc99libusb

OpenKeychain (OpenPGP for Android)

OpenKeychain: Easy PGP for Android

Science and medicine

Write Code, Save Lives.

2025202420232022202120202019201820172016

javahtml5groovyxmlhibernate10 more

Science and medicine

OpenMS GSoC: Advancing Algorithms & AI for Biomedical Insights

pythoncythonc++rpytorch

Programming languages

Lowering the barrier of entry to privacy preserving technology

deep learningfederated learninghomomorphic encryptionsecure multi-party computationdifferential privacy5 more

A power tool for working with messy data

Social and communication

A multi-purpose Open Source SIP proxy/server for carriers, telecoms or ITSPs

cpythonmysqlscripting

Create and distribute free geodata for the world

2025202420232022202120202019201820172016

javascriptjavaopenglrubypostgis7 more

OpenVINO Toolkit

Development tools

Make AI inference faster and easier to deploy!

2025202420232022

pythonc++x86arm

End user applications

The Hackable Network Management System

202520242023202220212020201920182017

pythonjavascriptdjangoopenwrtraspberry pi3 more

Social and communication

Developing Open Event Solutions for Everyone

pythonjavascriptandroidcloudemberjs

Oppia Foundation

End user applications

Free platform for interactive, tutor-like lessons

2025202420232022202120202019201820172016

pythonjavascriptangularjscssgoogle app engine6 more

Orange – Data Mining Fruitful & Fun

Science and medicine

A cross-platform, visual-programming tool for data mining and visualization.

pythoncythonmachine learningqt

Science and medicine

Humans & AI listening together to save the whales.

pythonjavascriptreactraspberry pielixir1 more

End user applications

Offline maps app for tourists, cyclers & hikers

2025202420232022

androidjavac++iosOpenStreetMap

Our World In Data

Science and medicine

Explaining the world's biggest problems with data

pythonmysqld3typescriptpandas

Shaping the future Internet TV

pythonandroidc++ioswebrtc4 more

Enhance people’s quality of life through Robotics

pythonjavascriptc++

Science and medicine

Develop and promote tools for ecosystem modeling

202520242023202220212020201920182017

cpostgresqljavascriptrphp6 more

Programming languages

PLASMA explores ways to make programming languages faster, safer, and easier.

javascriptcc++goscala

Programming languages

An extensible cross-language static code analyzer.

javaxmljavaccantlrxpath

PRISM Model Checker

Science and medicine

PRISM is a tool for formally verifying the correctness of probabilistic systems.

Digital Assets Managed Neatly

pythonjavascriptdjangoblendercelery

Unbiased open source database experts.

mysqlpostgresqlprometheusjavascriptselenium3 more

Performance Co-Pilot

Operating systems

System performance analysis

202220202019201820172016

javascriptjavarubygolanglinux kernel10 more

Pharo Consortium

Programming languages

Modern and immersive programming language

20252023202120192017

smalltalkroassalpolymathpharoide5 more

Physical Web Project

Physical Web GSoC project based on the Physical Web

pythonarduinointernet of thingsbeaconsbeacon3 more

Pidgin Instant Messenger

Social and communication

A universal chat client.

End user applications

Self-expression through filmmaking

2023202120202019

cgtkpython 3gstreamerpython

Plan 9 Foundation

Operating systems

Lightweight distributed computing

cgolangdistributed systemsconcurrency

Plone Foundation

Python-based CMS, with React front-end.

2025202420232022201820172016

pythonjavascriptrestnosqlzope4 more

Pocket Science Lab

Science and medicine

Miniaturizing the Open Science Lab with Open Hardware and Open Source Software

candroidjavafirmwarecad

Point Cloud Library

Science and medicine

Standalone, large scale, open project for 2D/3D image and point cloud processing

cmakecppdevopspythoncuda2 more

Programming languages

Promoting Polyhedral Compilation

llvmpollyppcginteger set librarypencil3 more

The Most Versatile Data Management Platform

javascriptjavasqlangular

Portland State University

Individual and Academic Open Source

open hardwarelanguage-agnostic

The Most Advanced Open Source Relational Database

202520242023202220212020201920182017

cpostgresqlperlsqlrdbms6 more

The Future is API-First

2024202320212020

javascriptnode.jsgraphqlopenapirest api3 more

PowerDNS provides open source DNS software

Programming languages

Automate and improve GitHub workflows

javascriptgithubnode.js

Processing Foundation

Programming languages

To empower all people to learn to program

20252023202220212020201920182017

pythonjavascriptandroidjavaopengl4 more

Science and medicine

Mesa: Agent-based modeling in Python 3+

pythonui/uxLLMsVector Operationsobject oriented programming

Project PANOPTES

Science and medicine

Discover New Worlds

python 3arduinocloud

Project WikiLoop

Contribute to open knowledge at scale - heritage preservation and translation

pythonjavamediawiki

Prometheus-Operator

Infrastructure and cloud

Managing Prometheus atop Kubernetes

prometheusgokuberneteskubernetes operators

Science and medicine

Tools for communities to measure pollution

202220212019201820172016

javascriptruby on railswebrtcleafletruby2 more

End user applications

Realtime Audio/Visual Programming Environment

2024202320222021202020192018

javascriptcc++node.jshtml5/css36 more

Python Software Foundation

Science and medicine

A programming language used for science & more

2025202420232022202120202019201820172016

pythonmercurialjavascriptsqlitec++1 more

Science and medicine

Sustainable software for quantum chemistry & more

pythongithubc++juliajupyter

Infrastructure and cloud

Open source machine emulator and virtualizer

202520232022202120202019201820172016

cassemblykvmpythonlinux2 more

Vector Search Database for the new AI generation.

pythonjavascriptrust

Operating systems

A reasonably secure operating system

cpythonxenshelllinux1 more

Helping millions of learners become better writers and critical thinkers

postgresqljavascriptreactrubyrails

R project for statistical computing

Science and medicine

R software for statistical computing & graphics

2025202420232022202120202019201820172016

cc++rfortranjavascript1 more

Science and medicine

Improve people's quality of life using patient generated data

javakotlindockerangularkafka

Operating systems

A real-time operating system for Earth & Space

2025202420232022202120202019201820172016

cpythonembedded systemswafposix3 more

Radare2 - Reverse Engineering Framework and Toolset

2020201820172016

crustpythonnode.jsqt3 more

React Native Elements

Programming languages

Cross Platform React Native UI Toolkit

javascriptreactreact native

ReactOS Foundation

Operating systems

Open your windows to freedom!

2022202120202019201820172016

Programming languages

Documentation Simplified

pythonjavascriptdjangosphinxelasticsearch1 more

Research on Multimodal Communication

202420232022202120202019201820172016

machine learningopencvhigh performance computingaudio procesingmultimodal analysis13 more

Responsible AI and Human Centred Technology

Science and medicine

Human-centered and responsible AI for all

pythonjavascriptTechnical writing

Rizin reverse engineering framework and toolset

20252024202320222021

Open-source framework to develop robot components

2022202120202019201820172016

pythonc++cmakezeroc icegnu/linux10 more

Operating systems

Fast unit testing runtime for Android

androidjavajvmasm

Rspamd is an email framework and spam filter

cluacmakejavascriptmachine learning3 more

Programming languages

Ruby is an object-oriented programming language

2023202220212020201920182016

rubycjavaruby on railsrubygems1 more

Ruby Science Foundation

Science and medicine

Tools for scientific computation in Ruby

2019201820172016

cc++rubyjrubyc programming7 more

Ruby on Rails is web framework that optimizes for programmer happinness.

ruby on railsrubyhtml

End user applications

SCoRe Lab develops FOSS softwares for everyone!!!

20232022202120202019201820172016

pythonandroidjavagolanghadoop10 more

An open ISO standard for SBOMs

2023202220212020201920182017

cpythonjavagithubrdf5 more

Automatically testing database systems

Software supply chain management done right !

javareactcouchdbSpringBoot

Science and medicine

Open-source mathematics software system

2025202420232022202120202019201820172016

pythoncythonjavascriptc++c1 more

Infrastructure and cloud

From the kernel to the browser, open source projects from Salesforce.

javascriptreactnode.jsscalaapache spark

Opening windows to a wider world

2021202020192017

Programming languages

Guide and support the Scala community

20252024202320222021201820172016

jvmscalallvm#scala#scala_lang6 more

Scalable Parallel Computing Laboratory

Programming languages

High-performance computing for clusters and clouds

pythonc++mpiawsServerless

End user applications

Cross-platform numerical computational package and programming language.

cjavac++fortranscilab2 more

End user applications

Adventure and RPG preservation project

2025202420232022202120202019201820172016

openglc++assemblysdlc3 more

Building data intensive applications in Rust

mysqlpostgresqlrustsqlsqlite

Programming languages

Framework for writing high-performance server applications on modern hardware

linuxcppframeworkdpdktcp

Semi Technologies

Science and medicine

The ML-first vector search engine

pythonmachine learninggolangvectorsnatural language processing

An open-source JavaScript library to play adaptive media.

pythonjavascriptweb developmentvideo codecsui/ux

Science and medicine

Unified and efficient Machine Learning

2020201920172016

pythonc++cmakeswigc5 more

End user applications

Java/GWT platform for humanitarian project management

javagwtpostgresql

Society for Arts and Technology (SAT)

Technological tools for creativity and industry

pythonjavascriptopenglc++supercollider2 more

Software Heritage

The universal source code archive

pythonjavascriptdjangogitpostgres2 more

Software and Computational Systems Lab at LMU Munich

Programming languages

Algorithms and Tooling for Software Verification

20252024202320192018

pythonjavascriptjavagrpcQuarkus

Soletta Project

Programming languages

Soletta Project is an open source framework for making IoT applications

cpythonjavascriptmachine learningnetworking

Space @ Virginia Tech

Science and medicine

Space@VT is devoted to the investigation of the space environment.

pythonmysqljavascriptmongodbd3

St. Jude Children's Research Hospital

Programming languages

Find cures. Saving children.

Science and medicine

Stemformatics is a web-based pocket dictionary for stem cell scientists.

pythonpostgresqljavascript

Science and medicine

Shaping a Scalable Future

202520242023202220212020201820172016

c++cudaopenclhigh performance computingparallel processing8 more

Science and medicine

Computational Fluid Dynamics and Optimization

Stony Brook University Biomedical Informatics

Science and medicine

Advance biomedical knowledge through innovative data science research

big datamedical imaginghadoopbioinformaticsc++4 more

Stratosphere Laboratory, Czech Technical University in Prague

Using machine learning and security to help others

pythonjavascriptredisflaskdocker1 more

End user applications

Design, remix, and share your neighborhood street, all in your browser.

postgresqljavascriptmongodbreactredux

End user applications

Homework Autograding and Course Management Tools

202420232022202020192018

pythonc++databaseswebhtml5 more

End user applications

Learning software for children

2025202420232022202120202019201820172016

pythonjavascriptgtk+androidgtk7 more

Programming languages

Fast, safe, and expressive programming language

20252024202320222021202020192018

llvmc++cmakeswiftios3 more

Science and medicine

SymPy is a Python library for symbolic mathematics

2025202420232022202120202019201820172016

pythonc++numpyjupyter

Programming languages

A completely FOSS toolchain for FPGAs.

verilogfpgaxilinxpythonc1 more

Open-source 2D animation software

2025202420232022202120202019

c++gtkgtkmmpythonc++11

Systers Community

Helping women find their potential in code. You are not alone.

pythonjavascriptandroidruby on railsios

Systers, an Anita Borg Institute community

Helping women find their potential in code.

pythonmysqlandroidruby on railsios2 more

TARDIS RT Collaboration

Science and medicine

Exploring supernovae made easy

2025202420232022

pythonnumbanumpyjupyterpandas

Science and medicine

Exploring supernovae made easy

cpythoncythonnumbanumpy2 more

TEAMMATES @ National University of Singapore

An online feedback management system for education

javascriptjavahtmlcssgoogle app engine1 more

Programming languages

TLA+ is a formal specification language used to design, model and verify systems

javaocamltla+eclipsesmt

Lighting fast in-memory DBMS with JIT onboard

cluasqlpythonc++

TensorFlow is a ML framework for everyone.

20232022202120202019

pythoncc++machine learningdata analysis7 more

The Apache Software Foundation

Open source software to the public free of charge

2025202420232022202120202019201820172016

pythonjavascriptjavarubycouchdb4 more

The Center for Connected Learning and Computer-Based Modeling

Programming languages

NetLogo: A language and IDE for programming and scientific simulations

2019201820172016

javascriptjavahtml5scalacss1 more

The ENIGMA Team

Programming languages

A free rapid game development environment.

2024202320222021

androidopenglc++qt5recursive-descent

The FreeBSD Project

Operating systems

An OS for servers to embedded devices

2025202420232022202120202019201820172016

cc++llvmshell scriptmake5 more

The Honeynet Project

Honeypots and Threat Intelligence R&D

2025202420232022202120202019201820172016

pythonandroidmachine learninghtmljavascript13 more

Programming languages

JPF is a Java VM used to verify and debug software

2025202420232022202120202019201820172016

androidjavadistributed systemsjvmbytecode1 more

The Julia Language

Science and medicine

A fresh approach to technical computing

202520242023202220212020201920172016

cjavascriptc++juliaatom9 more

The Libreswan Project

Infrastructure and cloud

Encrypting the Internet with IKE / IPsec

202220212020201920182017

cpythonshell scriptqemuweb6 more

The Linux Foundation

Operating systems

Non-profit consortium fostering growth of Linux

2025202420232022202120202019201820172016

cpythonmysqlc++cups5 more

The Mifos Initiative

End user applications

End Poverty One Line of Code at a Time

202520242023202220202019201820172016

mysqljavascriptandroidjavaangularjs3 more

The Monarch Initiative

End user applications

An informatics platform for translational disease research

javascriptsemantic webtext miningnamed entity recognitionontologies

The NetBSD Foundation

Operating systems

Of course it runs NetBSD

2025202420232022202120202019201820172016

networkingkernelbsdc programmingsecurity11 more

The P4 Language Consortium

Programming languages

Evolve the programmable data plane ecosystem!

llvmc++mlirebpfZ31 more

The Palisadoes Foundation

Social and communication

Social media and member management for non-profits

20252024202320222021

javascriptmongodbnode.jsfluttergraphql3 more

The Perl Foundation

Programming languages

Devoted to the advancement of the Perl languages through discussion and code

cperlregular expressionsperl6perl5

The Postgres Operator

A project to create an open-sourced managed Postgresql service for Kubernetes

postgresqlgolangkubernetesoperatorpatroni

Programming languages

The Qt Project co-ordinates the development of the Qt software framework.

openglqtqmlc++11cpp

The Rust Foundation

Programming languages

A language empowering everyone

The Terasology Foundation

End user applications

Voxel world game/engine with a large focus on extensibility and developer tools

202120202019201820172016

javaopenglblendergradlelwjgl4 more

The Tor Project

Defend yourself against tracking and surveillance.

20252023202220172016

cpythonjavascriptgolangbrowser extensions3 more

The Vega Project at the University of Washington

Declarative formats & Applications for Creating, Saving & Sharing Visualizations

javascriptreacttypescriptd3.jsd32 more

The Wine Project

Wine runs Windows applications on Linux, BSD, Solaris, macOS and Android.

20202019201820172016

copenglx11win32directx1 more

The ns-3 Network Simulator Project

Science and medicine

ns-3 is a simulation tool for computer networks.

202520242023202220212020201920182017

pythonc++cpython 3django

Operating systems

Modern, open source, UEFI BIOS firmware

cpythonrustgolanguefi

End user applications

A free, easy to use and flexible 2D level editor.

Software & hardware for recording + streaming conferences, meetings, user groups

2019201820172016

cpythonverilogfpgavhdl

Timelab Technologies Ltd.

End user applications

We help scientists understanding information in time-series

pythonjavascript

Programming languages

The asynchronous run-time for the Rust programming language.

Tungsten Fabric

Infrastructure and cloud

Secure software defined networking for any cloud, anywhere.

pythonlinuxcc++networking1 more

Programming languages

We do functional programming together

linuxnode.jsjvmscalawasm

Science and medicine

Amplifying Research Impact through Open Source

pythoncc++visualizationVLSI3 more

Science and medicine

Helping biologists see the bigger picture in diverse cancer genomics data

pythonjavascriptreactclojured31 more

Programming languages

Bringing internationalization to software!

javac++rustunicode

Operating systems

A Fast and Secure Unikernel SDK

2025202420232022

cpythonxenkvmassembly language1 more

Programming languages

Unitex/GramLab is an open source, multilingual corpus processing suite

End user applications

The User Experience LAB based on IA

pythonjavascripthtmlcssFirebase

Urban Energy Systems Laboratory, Empa

Science and medicine

HUES is a platform for modeling & analysis of distributed energy systems

pythongismilpfast fluid dynamics

Visual tracking and visual servoing library

End user applications

Open Source Multimedia for everyone!

2025202420232022202120202019201820172016

copenglc++qtassembly8 more

Comprehensive and open source middleware platform that spans the breadth of SOA

javaweb servicesmiddlewaresoadistributed computing

The powerful Python CMS for modern websites

2025202420232022

pythonjavascriptdjango

End user applications

Writing robust tools for the Wayland protocol

cc++rustwaylandZig

Wayland is a protocol for windowing systems on both desktops and embedded

copenglwaylandxmlkms

Wellcome Sanger Tree of Life

Science and medicine

Genome analysis for all species

pythonjavascriptrustnextflowmachine learning2 more

Wikimedia Foundation

Bringing free educational content to the world

202420232022202120202019201820172016

javascripthtmlphpcssjquery5 more

Wireshark is the world's foremost network protocol analyzer.

cc++luaqtcmake1 more

WorldBrain.io - Verifying the Internet

End user applications

Bookmarking extension that works like your brain - full-text search everything.

javascriptreactjsreactbrowser extensiondatproject

X.Org Foundation

X Window System and related projects (Mesa, DRI, Wayland, etc.)

2023202220202019201820172016

copenglc++vulkanopencl3 more

XMPP Standards Foundation

End user applications

XSF develops an open-standard messaging protocol

202420232022202020192017

javascriptjavac++xmpperlang10 more

The Advanced Open Source Enterprise Wiki

20232022202120202019201820172016

javascriptjavahtml5css3velocity1 more

Xapian Search Engine Library

Fast, scalable and flexible search

20202019201820172016

androidc++golangunicodeswig1 more

Infrastructure and cloud

Bringing the power of virtualization everywhere

linuxqemufree/netbsdasm/c/c++ocaml

Operating systems

Lightweight and flexible linux desktop environment

cpythonjavascriptgtkvala

End user applications

A modern text editor with a backend written in Rust.

Xiph.Org Foundation

Open-source and royalty free multimedia

rustassemblyarmx86c language

End user applications

FOSS accessibility solutions for visually impaired

pythonjavascriptandroidgtkqt

Science and medicine

A free and open digital archive for the long-tail of science.

pythonpostgresqlflaskangularjselasticsearch

End user applications

Organized chat for distributed teams

2025202420232022202120202019201820172016

pythonjavascriptdjangoandroidios5 more

An open source musical software synthesizer with a wide range of possibilities

cc++openglrubymidi1 more

Programming languages

Code for the book "Artificial Intelligence: A Modern Approach"

2019201820172016

pythonjavascriptjavamachine learningartificial intelligence3 more

A modern open source rendering engine for animation and visual effects

2020201920182017

pythonc++qtcopengl1 more

cBioPortal for Cancer Genomics

Science and medicine

Aid discovery in complex cancer genomics data

2025202420232022201920172016

javascriptjavawebhtmlbig data7 more

Science and medicine

Toolkit for cancer imaging research

2024202320212020

pythonjavascriptjavatensorflowmedical imaging3 more

Programming languages

Helps to adheres of Java coding standard

2025202420232022202120202017

javaantlrxpathartificial-intelligence

Programming languages

Linting and Fixing Code for All Languages

2021201920182017

pythondjangopython 3antlremberjs5 more

Operating systems

Fast, secure and flexible BIOS firmware

20232022202020192016

cassemblyopen hardwareassemblerarm1 more

End user applications

Simplify robotic apps with low latency & distributed dataflow

pythonrosc++rustAutonomous drive

Operating systems

Unleash eBPF Potential with our tools and runtimes

linuxllvmebpfwebassembly

Operating systems

Free and open wireless networks

202520242023202220212019201820172016

cluaopenwrtolsrbatman12 more

Infrastructure and cloud

A high performance, open-source universal RPC framework

distributed systemsnetworkingmicro-servicesscalabilityhttp/23 more

Operating systems

An application kernel for containers that provides efficient defense-in-depth

linuxcc++golangposix

Science and medicine

Simulating electromagnetic wave propagation

20252024202320212019

pythoncythoncudaopenmpmpi1 more

Operating systems

Open Source successor of OpenSolaris

unixdtraceillumosopenzfszfs

jQuery Foundation

jQuery Foundation - home of jQuery, Dojo and many other JavaScript libraries

javascripthtml5cssjquery

kro | Kube Resource Orchestrator

Infrastructure and cloud

Simplify Kubernetes API and resource management.

prometheusgolangkubernetescontroller-runtimeCEL

languagetool.org

End user applications

Style and grammar checker

javascriptjavamachine learningtensorflowai

Provide an open source camera stack for linux

cc++linux kernelqt5gstreamer1 more

Programming languages

The SSH library

2025202420232022

End user applications

Virtualization abstraction library

20242022202120202019201820172016

cxenqemucontainerskvm4 more

Open to the core - collaborative engineering for open source silicon and tools

linuxverilogfpgachiselc++3 more

Science and medicine

a fast, flexible machine learning library

202420232022202120202019201820172016

c++pythonmachine learningdeep learningtemplates2 more

Collaboration for change

pythonjavascriptc++dockerData-Science

Programming languages

A static type checker for Python and a compiler for type-annotated Python

End user applications

Open virtual datacenter management for all

End user applications

Open CS Education as a catalyst for social change

20252024202320222018

pythonmysqlphptypescriptvue.js

openSUSE Project

Operating systems

Makers' choice for sysadmins, developers & users

202520242023202220212020201820172016

linuxruby on railsrubydockerangularjs16 more

Infrastructure and cloud

A safe home for all your data

javascripthtmlsqlphpcss3 more

phpBB Forum Software

Social and communication

phpBB is the most widely used free and open-source forum solution.

mysqljavascriptphpcsssymfony1 more

A web interface for MySQL written in PHP

mysqljavascriptphpjquerycakephp1 more

Social and communication

Open source communications platform for the AI age

202520242023202220212020201920182017

javascriptwebrtcmeteor.jsmongoandroid14 more

A unified framework for ML with time series

pythongithubsphinxscikit-learn

Science and medicine

The fundamental numerical library for JavaScript

cjavascriptnode.jstypescriptwebassembly

Development tools

Linux syscall tracer

2022202120202019201820172016

clinuxshell scriptmakegit4 more

Enhanced log daemon, w/ wide range of I/O methods

202220212020201920182016

cpythonjavarustbig data6 more

The multimedia search engine

javamachine learningwebdatabasescomputer vision7 more

webpack is the module bundler for web projects

20252024202020192018

javascriptnode.jsweb developmenthtml5/css3webassembly3 more

Programming languages

Library for creating portable native GUIs in C++

c++gtk+win32cocoa

screen for X11, remote access for MS Windows and Mac OS

pythoncythonjavascriptcompressionremote access1 more

XR for the Linux Desktop

cvulkanwaylandglibopenxr