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3DTK
Science and medicine
The 3D Toolkit provides algorithms and methods to process 3D point clouds
2018
cc++rosopencvcmake1 more
52°North Spatial Information Research GmbH
Science and medicine
Innovative ideas & technologies in geoinformatics
2025202420232022202120202019201820172016
javascriptjavaweb servicesogc standardsweb6 more
AFLplusplus
Security
State of the art fuzzing for better security
202520242023202220212020
cc++llvmfuzzingqemu3 more
AOSSIE
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
2016
pythonpostgresqlllvmscalalisp
API Client Tools at Google
Programming languages
Industry-leading user experiences for networked APIs.
2019
restopenapigrpcprotocol buffersrpc
API Dash
Development tools
Next-gen Open Source AI powered API DevTool
20252024
flutterapiaidartui/ux
ASCEND
Science and medicine
Equation-solving software for engineering system modelling
2016
cpythonc++
AboutCode
Security
Scan code for origin, license and vulnerabilities
20252024202320222021202020192017
pythonjavascriptcc++shell script10 more
Academy Software Foundation
Media
Creating amazing OSS for Media & Entertainment.
20222020
pythoncc++openglrust
Accord Project
Programming languages
Open source software for smart legal contracts
2025202420212020
javascriptreactcompilerocamlcoq3 more
AerospaceResearch.net
Science and medicine
making space together
20212020201920182017
pythoncc++vhdlboinc5 more
Alaska
Science and medicine
Many Traditions, One Alaska
20252024
pythonmysqljavamatlabdicom
Amahi
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
202120202019
cc++javaopenglvulkan3 more
AnitaB.org Open Source
Other
Women transform technology. Technology transforms the world.
2020
pythonjavascriptandroidios
AnkiDroid
End user applications
AnkiDroid makes remembering things easy
2025202420222021
javascriptandroidjavagradlerust2 more
Apache DataFusion
Data
Foundational library for DBs and compute engines
2025
pythonrustsqlarrow
Apertium
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
ArchC
Programming languages
ArchC is an Architecture Description Language
2016
pythonc++archc
ArduPilot
Science and medicine
World's most advanced autonomous vehicle software
202520242023202220212020201920182017
pythonrosc++embeddedrtos6 more
Arduino
Programming languages
Open source electronic prototyping platform
2020
cc++golangarduino
AsyncAPI
Programming languages
Building the future of Event-Driven Architectures
20252024
javascriptjavagotypescriptRAML
Audacity
End user applications
Free, open source, cross-platform audio software
20222021
c++qtcmakewxwidgetsVST
BRL-CAD
Media
3D CAD & other computer-aided tech (CAx)
2025202420232022202120202019201820172016
pythoncc++openglopencl5 more
Babel
Programming languages
Babel, the community driven compiler for writing next generation JavaScript
2017
javascriptnode.jsbabel
Bazel
Programming languages
Build and test software of any size, quickly and reliably
20192017
linuxjavagocc++2 more
BeagleBoard.org
Science and medicine
Open hardware computing for educators and makers
2025202420232022202120202019201820172016
cpythonlinuxjavascriptbeaglebone14 more
Beam Community
Programming languages
From distributed systems, to robust servers and language design on the Erlang VM
201820172016
xmpperlangelixirbeammqtt1 more
BeeWare Project
Programming languages
Tools for cross-platform Python application development.
20182017
pythonandroidiosmobilejavascript1 more
Bench-Routes
End user applications
Bench-routes is an open-source project to analyze performance and monitor APIs.
2021
reactgolangdocker
Berkman Klein Center for Internet and Society
Other
Exploring cyberspace, sharing in its study, & helping to pioneer its development
2019201820172016
javascriptruby on railsgometeor.jssql/nosql5 more
BioGears
Science and medicine
ARA is an employee-owned scientific research and engineering company.
2020
pythoncc++cmakec++11
BioJS
Science and medicine
BioJS is an open source project that visualizes biological data using JavaScript
2016
pythonjavascript
Biomedical Informatics, Emory University
Science and medicine
Department of Biomedical Informatics (BMI), Emory University School of Medicine
20192016
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
201820172016
clinux kernelxiaadvanced data structuresddos
BuildmLearn
End user applications
Building m-Learning applications
2016
pythondjangobootstrapandroid
Buildroot
Programming languages
Making Embedded Linux easy
2019
pythonshellgnu makekconfig
C2SI
Security
C2SI develops FOSS softwares for everyone!!!
2024
pythonjavagonode.jstensorflow
CASTOR
Programming languages
Trustworthy software intensive systems for critical functions.
2021
javascalabytecode
CBMI@UTHSC
Science and medicine
We develop Biomedical and Clinical informatics applications
2019
pythonjavascriptflasktensorflowreactjs
CCExtractor Development
End user applications
TV, Rust, Flutter, Linux, VR and C. In any order.
2025202420232022202120202019201820172016
clinuxvideoffmpegsubtitles12 more
CERN SFT
Science and medicine
The SFT is part of CERN (European Organization for Nuclear Research).
2016
pythonjavascriptc++clang
CERN-HSF
Science and medicine
Umbrella for Particle Physics-related projects
202520242023202220212020201920182017
pythoncc++machine learningdata analysis5 more
CGAL Project
Science and medicine
C++ library of computational geometry
202520242023202220212020201920182017
githubc++gitpythonswig2 more
CHAOSS
Data
Community Health Analytics Open Source Software
202520222021202020192018
javascriptpython 3pythonmysqljupyter11 more
CHIPS Alliance
Programming languages
Open source IP, tools & standards for ASIC/FPGA
202420232022
fpgachiselrisc-vsystemverilogASIC
CLiPS, University of Antwerp
Data
Computational Psycholinguistics
201920182017
pythonjavascriptmachine learningmongodb
CMU Sphinx
Media
Fast, Accurate, Flexible Open Source Speech Recognition
2017
cpythonjavascriptcross-platformhidden markov models
CNCF
Data
Building sustainable ecosystems for cloud native
202520242023202220212020201920182017
prometheusgokubernetesfluentdgrpc7 more
CRIU
Operating systems
Chekpoint/Restore for Linux tasks and containers
2025202420232022202120202019
linuxdockercontainerskernelc4 more
CVAT
Web
Computer Vision Data Annotation Platform for AI
2024
pythondjangoreactkubernetestypescript
CVXPY
Other
CVXPY is a Python-embedded modeling language for convex optimization problems.
2016
python
Cadasta
End user applications
Transforming the way land & resource rights are documented, managed and stored.
2017
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++
2023
llvmc++clangBison
Casbin
Web
Authorization library that supports RBAC and ABAC
202220212020
pythonjavascriptgoreactrust5 more
Celluloid
Programming languages
Painless multi-threaded multi-core programming for Ruby.
2016
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.
20252022
pythonawsgolangdockerpostgres2 more
Ceph Foundation
Data
The Future of Storage
20252024202320222021202020172016
pythoncc++object-storagejavascript4 more
Chapel
Programming languages
A Productive Parallel Programming Language
20212020201920172016
cpythonc++chapelhigh performance computing
Checker Framework
Security
Prevent programming errors via simple verification
20252020201920182017
javacompilersVerificationformal methodstype systems
Chromium
Operating systems
Fast, seamless, safe, and reliable web for all
20252024202320222021
pythonjavascriptjavac++git
Cilium
Infrastructure and cloud
eBPF-based Networking, Security, and Observability
2021
clinuxgokubernetesebpf
CircuitVerse.org
Science and medicine
Build and learn logic circuits in the cloud!
2025202420232022202120202019
postgresqljavascriptbootstraprailshtml5 canvas6 more
City of Boston
Data
Empowering Boston's residents through technology
2024
pythonjavascript
CiviCRM
End user applications
Growing and sustaining relationships
20212020201920182016
mysqljavascriptphpangularjsd3js2 more
Classical Language Toolkit
Other
NLP for the Ancient World
201820172016
pythonjavascriptjava
Clojure
Programming languages
Supporting the Clojure and ClojureScript ecosystem
2017
javascriptclojureclojurescriptjvmfunctional programming
CloudCV
Web
Building platforms for reproducible AI Research
202520242023202120202019201820172016
pythonjavascriptluacaffetorch12 more
Cockpit Project
Operating systems
Cockpit is an interactive server admin interface
2023
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
2016
javascriptjavac++htmlcss
Continuous Delivery Foundation
Programming languages
Open-source community seeking to deliver software with security & speed
20212020
tektonspinnakerci/cdscrewdriverjenkins2 more
Conversations.im
Social and communication
An open source instant messaging client and ecosystem based on Jabber & XMPP
20182017
pythonandroidjavaxmppjavafx2 more
Copyleft Games
Media
Game libraries, frameworks, and development toolkits
20172016
cpythonopengljavascriptxmpp
Creative Commons
Web
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.
202520192016
c++dlanglinuxosxwindows4 more
DBpedia
Science and medicine
Global and Unified Access to Knowledge Graphs.
2025202420232022202120202019201820172016
pythonjavascalardfnosql5 more
Dart
Programming languages
Dart is a client language for apps on any platform
202520242023202220212020
flutterdartprogramming-language
Data for the Common Good
Web
Connect. Share. Discover.
20252024
pythonjavascriptkubernetesreactjsterraform
DatenLord
Data
High-performance AI+Cloud infrastructure provider.
2024
rustkubernetesDistributed key-value storeFault tolerantMetadata management
Debian
Operating systems
The Universal Operating System
20252024202220212020201920182016
cpythondjangorubyc++6 more
DeepChem
Science and medicine
Democratize AI for drug discovery.
20252024
pythonnumpypytorchHuggingFace
DeepPavlov
Other
Open-source Conversational AI Stack
2021
pythontensorflowdockerpython deep learning frameworkspytorch
Department of Biomedical Informatics, Emory University
Security
Biomedical research to advance healthcare
20252024202320222021
pythonjavatensorflowmedical imagingdeeplearning5 more
Developers Italia
Other
An open community of digital public services developers
20192018
pythoncc++javaruby6 more
Digital Impact Alliance (DIAL) at UN Foundation
Other
Open source projects for humanitarian work, international development, and peace
2021202020192018
pythonjavascriptandroidjavaphp3 more
Discourse
Social and communication
Civilized discussion for your community.
20172016
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.
2016
pythonc++cmake
Django Software Foundation
Web
Web framework for perfectionists with deadlines
2025202420232022202120202019201820172016
pythondjango
Drupal Association
Web
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.
20192018
pythonjavascriptkubernetesdaskxarray3 more
Eclipse Foundation
Programming languages
The Global Open Source Foundation
202520242023202220202019201820172016
cc++javageospatialgeo14 more
Eclipse Vert.x
Programming languages
Eclipse Vert.x is a tool-kit for building reactive applications on the JVM
20172016
javascriptjavagroovymicro-servicesreactive4 more
Elastic
Data
We are the creators of Elasticsearch, Kibana, Beats, and Logstash.
20202018
javareactnode.jsgolangjruby
Electron
End user applications
Cross-platform desktop apps with web technologies
202520242022
javascriptnode.jsc++typescriptChromium
Elm Software Foundation
Programming languages
A delightful functional language for reliable webapps.
2017
javascripthaskellelm
Elm Tooling
Programming languages
Improving your Elm experience!
2021
functional programmingtypescriptelm
Embox
Operating systems
Modular and configurable OS for embedded applications
2020
cassemblygcc
Environmental Data And Governance Initiative
Data
International network addressing threats to US environmental & energy policy
2017
pythonjavascriptruby on railsgoogle cloudgo
Erlang Ecosystem Foundation
Programming languages
Supporting the Beam community
2020
erlangelixirbeamlfe
Eta
Programming languages
Eta is a dialect of Haskell on the Java Virtual Machine.
2018
javahaskelljvm
FFmpeg
Media
Record, convert and stream audio & video
2025202420232022202120202019201820172016
cgitasmassemblyassembler1 more
FLARE
Security
Industry leading malware analysis
202520242023
pythonida-proGhidraSandbox
FOSDEM
Programming languages
The organization that handles all aspects of the FOSDEM conference
201920172016
postgresqlruby on railsgithtmlcss4 more
FOSSASIA
Science and medicine
Free and Open Source Software in Asia
202520242019201820172016
pythonjavascriptandroidjavajson api5 more
FOSSology
Web
Open Source License Compliance by OSS
20252024202320222021202020192018
linuxpostgresqlcc++php8 more
FRRouting
Other
Routing suite including BGP, IS-IS, LDP, OSPF, PIM
202220212020
clinuxluanetworkinglinux kernel1 more
Fedora Project
Operating systems
Freedom, Friends, Features, and First.
202520202019201820172016
pythonpostgresqljavascripthtml5flask16 more
Flashrom
Operating systems
Reading, writing, verifying, erasing flash chips
2022
cx86biosromspi
Forschungszentrum Jülich
Science and medicine
Shaping change: open source for Big Science
2022
pythonmpihigh performance computingpytorchgpu
Fortran-lang
Programming languages
High-performance parallel programming language
20252024202320222021
pythoncc++llvmcompiler1 more
FrameNet Brasil (UFJF)
Data
Natural Language Understanding with structured computational semantics
202120202019
pythonmysqljavascriptphp
Free UK Genealogy
Data
Human transcription of family history data
2018
pythonmysqlmongodbruby on railscss1 more
Free and Open Source Silicon Foundation
Other
Working together for Free and Open Source Silicon
2025202420232022202120202019201820172016
pythonjavascriptfpgacompileropen hardware9 more
FreeCAD
End user applications
Cross-platform 3D parametric modeler
202520242023
pythonc++qtOpenCASCADEOpenInventor
FreeType
Programming languages
FreeType is a software library to render fonts.
20242023202220212020201920182017
cfontsopentypelibrarypython4 more
Frescobaldi
End user applications
Edit music scores with GNU LilyPond.
2017
pythonpyqt
GCP Scanner
Security
Security scanning tool for Google Cloud
2023
pythongoogle cloud
GDevelop
Programming languages
The cross-platform game engine designed for everyone.
2020
javascriptcc++reactweb development1 more
GENIVI Alliance
Other
Developing open software for IVI and the connected car.
201920182017
clinuxc++qtyocto4 more
GNOME Foundation
Operating systems
A diverse and sustainable free software desktop.
2025202420232022202120202019201820172016
cpythonjavascriptgtk+gobject5 more
GNSS-SDR
Science and medicine
An open source GNSS software-defined receiver
202520242022202120202019201820172016
cc++c++11c++14gnss4 more
GNU Compiler Collection (GCC)
Programming languages
GNU compilers
20252024202320222021202020192018
cc++openmpgnu autotoolsgnu make
GNU Image Manipulation Program
End user applications
GIMP is a cross-platform image editor
2025202420232022
cGEGL
GNU Mailman Project
Social and communication
GNU Mailman is a mailing list manager popular in open source projects.
202120192016
pythondjangoemailpython 3rest2 more
GNU Octave
Science and medicine
Free Your Numbers
2025202420232022202120202019201820172016
c++hg
GNU Project
Operating systems
Development of the GNU Operating System
2024202320202019201820172016
cpythonposixlispeiffel8 more
GNU Radio
Science and medicine
The free & open software radio ecosystem
2025202420232022202120202019201820172016
pythonc++dspsoftware radiorf4 more
GPAC
Media
C multimedia framework
20202016
javascriptc++mp4dashmp4box2 more
GRAME
Programming languages
Domain specific language for audio
2025202420232022
cpythonjavascriptc++typescript1 more
GRR Rapid Response
Security
GRR Rapid Response is an incident response framework for remote live forensics.
2021
python 3angulartypescriptmaterialuibackend
Gambit - Software Tools for Game Theory
Science and medicine
Software for Analysis of Game Theory Models
2016
javascript
Ganeti
Other
Cluster virtual server management software
2016
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
202320222021
pythonmysqljavascriptrustpytorch2 more
Gentoo Foundation
Operating systems
A flexible, source-based Linux distribution.
20232022202120202019201820172016
pythoncc++perlshell script5 more
GeomScale
Science and medicine
Scalable geometric and statistical software
202520242023202220212020
pythonc++rjupytergithub-actions
Git
Programming languages
Fast,Scalable,Distributed revision control system
2025202420232022202120202019201820172016
cshell scriptgitshellc language
GitHub
Other
How people build software
2016
rubynode.jsgitatomc#
GitLab
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
GnuTLS
Programming languages
C library implementing TLS and DTLS
2023
cCryptographyTLS
Godot Engine
End user applications
Multi-platform 2D and 3D game engine
20222021202020192018
openglgithubc++cppcrossplatform5 more
Google DeepMind
Artificial Intelligence
Google DeepMind's open-source projects
2025
pythonjavascripttypescriptJaxGemma
Google FHIR SDK
Science and medicine
This work is a partnership between Google, WHO, Ona and other health partners
2021
androidkotlinsqlitefhirmaterialui
GraphQL Foundation
Data
GraphQL is a fast and efficient query language for APIs.
2020
javascriptreactnode.jsgraphql
Graphite
End user applications
Editor, graphics engine, & compiler for art/design
20252024
machine learningrustvulkanaiwebgpu
Green Navigation
Other
Energy efficient routing for electric vehicles
20172016
postgresqljavascriptgopolymerelectromobility4 more
Haiku
Operating systems
Operating system that targets personal computing.
20242023202220212020201920182017
c++posixffmpegbsd unixwebkit4 more
Halide
Programming languages
A language for fast, portable computation on images and tensors
2021
llvmc++
Haskell.org
Programming languages
Purely functional programming language
2025202420222021202020192018
haskellghccabalcodeworldservant1 more
Hazelcast
Data
In-Memory Computing Platform
2020
javadistributed systems
Health Information Systems Programme
Web
Health information system which is being used by 47 countries across world.
2016
javascriptandroidjavagradlereactjs
Homebrew
Programming languages
The Missing Package Manager for macOS (or Linux)
20222020201820172016
rubygitosxgithubbash3 more
HumanAI
Media
AI for the Arts and the Humanities
20252024
pythonmachine learningc++data analysisartificial intelligence
Hydra Ecosystem
Web
Automate REST APIs. Build next generation API clients.
2021202020192018
pythonflaskrdfhydrajson/json-ld7 more
INCF
Science and medicine
An open & FAIR neuroscience standards organization
2025202420232022202120202019201820172016
pythonjavascriptjavac++gpu5 more
IOOS
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
202020182016
javascripthtml5node.jscssjquery2 more
Indic Project
End user applications
Improving Information Infrastructure and Access to Knowledge in Indian languages
2016
pythonjavascriptandroidruby on railsc++
Inkscape
End user applications
Draw freely!
2025202420232022202120202019201820172016
pythonc++csssvggtk+4 more
Inria Foundation
Science and medicine
SOFA is an efficient simulation engine for research in medical simulation.
2018
cc++qtasmwebassembly1 more
Institut für Angewandte Informatik (InfAI) e.V.
Media
Putting scientific research into practice.
2019
javascriptjavaa-frameneo4jhtc vive
Institute for Artificial Intelligence
Science and medicine
Research in Artificial Intelligence for Autonomous Mobile Robots
20182017
pythonrosc++lispprolog1 more
Intel Video and Audio for Linux
Media
We enable Linux Audio and Video for Intel
202220212020201920182017
videodecodeencodevppmultimedia15 more
InterMine
Science and medicine
Integrating biological data sources, making it easy to query and analyse data
20192018
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
Other
We support the infrastructure of the Internet with Open Source
20192018
mysqlcc++restdhcp4 more
Invesalius
Science and medicine
3D Medical visualization and neuronavigation tool
202520242023
pythoncythonnumpydicomVtk
Ivy (lets-unify.ai)
Data
All of AI, at your Fingertips.
2023
pythoncythontensorflowpytorchJax
JAX and Keras
Artificial Intelligence
Python libraries for large-scale machine learning
2025
pythonmachine learningai
JBoss Community
Data
Community of projects around JBoss Middleware
2022202120202019201820172016
androidjavaideasciidoctoraerogear9 more
JGraphT
Programming languages
Java library that provides graph data-structures and algorithms.
2018
java
JSK Robotics Laboratory / The University of Tokyo
Science and medicine
JSK is focusing on the fundamental functions & systems for intelligent robots
2019201820172016
roseuslispopenhrpopenrtmlisp1 more
JSON Schema
Data
We enable the reliable use of JSON data format.
20252024
pythonjavascripttypescript.netJSON Schema
JabRef e.V.
Science and medicine
Stay on top of your Literature
20252024202220212019
javajavafxlatextypescriptbibtex1 more
JdeRobot
Other
Toolkit for developing Robotics applications
202520242023202220212020201920182017
pythoncc++rosgazebo2 more
Jenkins
Programming languages
Jenkins, build great things at any scale
20252024202320222020201920182016
javagroovyhtmljenkinscss5 more
Jenkins X
Infrastructure and cloud
Accelerate Your Continuous Delivery on Kubernetes
2022
golangkubernetesgitops
Jina AI
Data
Multimodal AI from the community, for everyone
2023
pythonmachine learningmicroservicesdata scienceMultimodel AI
Jitsi
Media
State-of-the-art video conferencing
20252024202220182017
javascriptjavaxmppwebrtcsip3 more
Joomla!
End user applications
The flexible platform empowering website creators.
2025202220212019201820172016
javascripthtmlphpcssjquery3 more
Joplin
End user applications
The secure note taking application
2024202220212020
reactnode.jsreact nativeelectronterminal-kit3 more
K-9 Mail
End user applications
K-9 Mail – Advanced Email for Android
2017
androidjava
KDE Community
End user applications
Control your digital life
2025202420232022202120202019201820172016
c++qtcmakephpqt55 more
KNIME
Data
Open for Innovation
2019
javascriptjavatensorflow
Kapitan
Programming languages
Templated configuration management for Kubernetes, Terraform and other things
20202019
pythonkubernetesjsonnetjinja2terraform1 more
Kart Project
Data
Distributed version-control for geospatial data
2022
pythonc++gitgis
Keploy
Programming languages
Unit, API test generation agent using AI & EBPF
202520242023
javagolangnode.jsMERNepbf2 more
Keptn
Infrastructure and cloud
Event-driven orchestration of cloud-native apps
2022
golangkubernetesangularHelm
Kiwix
End user applications
Internet content available offline.
2025202420232021202020192018
pythonandroidjavac++qt8 more
Kodi
End user applications
The ultimate entertainment center
202220212020201920182017
pythonxmlc++11gitdrupal7 more
KolibriOS Project Team
Operating systems
A tiny and fast operating system in fasm
20242016
fasmflat assemblerx86 assemblyi386i5864 more
Kornia
Programming languages
Advancing Computer Vision & Spatial AI, Openly
2025
cudarustdeep learningdata scienceSpatial AI
Kotlin Foundation
Programming languages
Advance the Kotlin programming language
202520242023
gradlekotlinjvmParsers & CompilersMultiplatform
KubeVirt
Infrastructure and cloud
Building a virtualization API for Kubernetes
202520242023
golanggrpc
Kubeflow
Infrastructure and cloud
The Machine Learning Toolkit for Kubernetes (AI)
202520242020
pythontensorflowkubernetesjupyter notebookkustomize3 more
LAPPIS
Security
Social Participation to Reach Millions
2024
pythonmachine learningruby on railsjupyter hub
LEAP Encryption Access Project
End user applications
Privacy should not be a priviledge
20222018
pythonjavascripttwistedopenvpngnupg5 more
LLVM Compiler Infrastructure
Programming languages
LLVM Compiler Infrastructure
2025202420232022202120202019201820172016
cllvmc++clangmlir
LabLua
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
202120202019
pythondjangocc++arduino6 more
LibreCube Initiative
Science and medicine
Open Source Space Exploration
202420222021
pythonmicropythonzmqmbedmongodb3 more
LibreHealth
Science and medicine
Healthcare for Humanity
2023202220212020201920182017
mysqljavascriptjavaphpwebcomponents4 more
LibreOffice
End user applications
LibreOffice is a free and open source office suite
2025202420232022202120202019201820172016
pythonandroidjavaopenglc++
Linkerd
Infrastructure and cloud
Linkerd is the ultralight service mesh for Kubernetes and beyond
20202019
prometheusreactrustgolangkubernetes1 more
Liquid Galaxy project
Data
We code immersive and interactive apps with GEarth
202520242023202220212020201920172016
javascriptrosgiscesiumcesiumjs12 more
LuaRocks
Programming languages
The Lua package manager and ecosystem
201920182017
lualuarocksclinuxwindows1 more
MBDyn
Science and medicine
Open Source Multibody Simulation
20252024202220212020201920172016
c++pythonscriptingc
MDAnalysis
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
20212020
pythonjavascriptjuliagismapping1 more
MIT App Inventor
Development tools
Anyone can build apps with global impact
202520242023202220212020201920172016
androidjavahtmljavascriptgwt5 more
MZmine
Science and medicine
Open-source software for mass spectrometry
20222020
javajavafx
MZmine and MS-DIAL
Science and medicine
Open-source software for mass spectrometry
2023
javac#javafx
MacPorts
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
Mantis
Data
Stream Processing for Operational Analytics
2023
javaRxjavaAkkaNetty
MapAction
Other
MapAction works on maps and data analysis for the humanitarian sector
2021
pythondata analysisgisapache airflowvisualization
MariaDB
Data
The fastest growing Open Source Database
2025202420232022202120202019201820172016
cmysqlmariadbperljava4 more
Mathesar
Data
Webapp providing a UX-first interface to databases
20232022
pythonpostgresqljavascriptdjangosvelte
Matrix.org
End user applications
Open, secure, decentralised communication
2022202120202019201820172016
pythonandroidreactgolangios7 more
Mautic
End user applications
Free your Marketing with Open Source!
2024
mysqlphpsymfony
Mayor's Office of New Urban Mechanics
Data
Exploring new approaches to civic life.
202320222021
pythonjavascriptrubytensorflow
McGill Space Institute
Science and medicine
Center bringing together scientists doing space-related research at McGill
2016
pythonsqlbig datadatabases
Media Cloud
Other
Media Cloud is an open-source platform for media analysis.
2021
pythonpostgresqljavascriptreactdocker
MediaPipe
Media
Live ML anywhere
2021
pythonjavascriptandroidc++ios
Meshery
Infrastructure and cloud
the extensible, collaborative, Kubernetes manager
2025
javascriptgolangkubernetesvisual design
MetaBrainz Foundation Inc
Data
Open music / book metadata, music recommendations
2025202420232022202120202019201820172016
pythonpostgresqljavascriptperlpostgres6 more
MetaCall
Programming languages
Simplifying the embedding of programming languages
2024202320222021
pythonjavascriptcc++cmake4 more
Metasploit
Security
World’s most used penetration testing framework
202320222021202020182017
crubyasmpythonpostgresql1 more
Micro Electronics Research Lab - UITU
Other
Accelerating Engineering Innovation
2025202420232022
RISCVProcessorHardwaresystemonchipmemory
Microkernel devroom
Operating systems
Confederation of microkernel projects (Genode, HelenOS, GNU Hurd, MINIX, Redox)
2017
cc++rustarmx86
Mixxx
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
201820172016
rosopencvc++qtcmake5 more
ModSecurity
Security
ModSecurity cross platform web application firewall
2016
wafweb application firewall
Moira
Programming languages
Moira is a realtime alerting system based on Graphite data
20202019
javascriptgolanggrafanatypescriptgraphite1 more
Monado
Media
Monado, the free and open source XR platform
2022
openglvulkanopenxrGraphicsXR
Mono Project
Programming languages
Cross-platform C#/F#/.NET runtime and tools
2017
cc#.netf#
Moodle
Social and communication
Empowering educators to improve our world
2019201820172016
mysqlpostgresqljavascriptphpjquery3 more
MoveIt
Science and medicine
Moving robots into the future
20242023202220212020
rosc++cpython 3robotics2 more
Mozilla
Web
Keeping the Internet open and accessible to all.
20202019201820172016
pythonjavascriptc++rusthtml4 more
MuseScore
End user applications
The World’s Most Popular Music Notation Software
202420232022202120202019201820172016
cc++qtqmlc++115 more
NV Access
Other
Empowering lives through non-visual access to technology
20202019
pythonc++ui automationiaccessible2win32 api
Named Data Networking Project
Web
A Content-Centric Future Internet architecture
2019
javascriptandroidjavac++14c#
National Resource for Network Biology (NRNB)
Science and medicine
Developing open source tools for network biology
2025202420232022202120202019201820172016
pythonjavascriptjavac++php8 more
Navidrome
Web
Modern music server and streamer compatible with Subsonic/Airsonic
2021
reactgolangffmpeg
Neovim
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
Web
Netty is an asynchronous event-driven network framework
2020
cjavajni
Neuroinformatics Unit
Science and medicine
Open-source tools for neuroscience and ML
2025
pythonnumpypytorchScipynapari
Neutralinojs
Web
Lightweight cross-platform desktop app framework
20242022
cjavascriptnode.jsc++typescript
Nightwatch.js
Programming languages
An integrated testing framework powered by Node.js
2024
javascriptseleniumnode.jstypescriptWebDriver
NixOS Foundation
Programming languages
Declarative builds and deployments
2024
gitnix
Nmap Security Scanner
Security
Swiss Army knife of network discovery and security auditing
20172016
cpythonc++lua
NumFOCUS
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
Other
OSU Open Source Lab
2016
pythonjavascriptrubyrest
OW2
Other
The open source community for infrastructure software.
2018
javaperlmiddlewarebpmwiki
OWASP Foundation
Security
No more insecure software.
202520242023202220212020201920182016
pythonjavascriptjavahtmlphp9 more
Open Bioinformatics Foundation (OBF)
Science and medicine
Open Source & Open Science in biological research
2022202120202019201820172016
pythonjavahaskellrubyperl10 more
Open Chemistry
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
2024
pythonnumpyscikit-learnpandasHDF5
Open Climate Fix
Science and medicine
Using Computers to Fix Climate Change
20252024
pythonpytorch
Open Data Kit
End user applications
Open Data Kit is used to collect data for social good in difficult environments.
201920182017
pythonjavascriptandroidjavaruby
Open Detection
Other
Open Detection is a open source project for object detection and recognition.
20172016
cc++opencvcmakecaffe1 more
Open Ephys
Science and medicine
Open-source electrophysiology
2016
c++juce
Open Food Facts
Science and medicine
Better food choices for your health & the planet
202520222018
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
20252024
pythondjangoreacttypescriptNextJs
Open Roberta
Programming languages
Open Roberta® Lab is an online IDE introducing kids to program robots with NEPO®
2021202020192018
javascriptjavapythongoc++1 more
Open Robotics
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
20252024
pythongithub
Open Science Labs
Science and medicine
The community open to science and technology.
2025
pythonjavascriptc++dockerAST
Open States
Other
Open Source State Legislative Data
20182017
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
20252024
androidjavagolangdockerios
Open3D team
Data
A Modern Library for 3D Data Processing
2022
pythonc++cudatensorflowpytorch
OpenAFS
Operating systems
An open source distributed filesystem.
20252022
cpythongitansiblefilesystems2 more
OpenAstronomy
Science and medicine
Look at the Universe with the power of Open Source
2025202420232022202120202019201820172016
cpythonjulianumpyqt5 more
OpenCV
Media
++ beneficial uses of computer vision in society
202520242023202220212020201920172016
pythonmachine learningc++computer visiondeep learning7 more
OpenCensus
Infrastructure and cloud
Planet Scale Tracing and Monitoring
2018
pythonjavagorubynode.js
OpenELIS Global
Science and medicine
Empowering labs to Ensure Quality Health Care
20252024
postgresqljavascriptjavareactspring
OpenEMR
Science and medicine
OpenEMR is a leader in healthcare open-source software
2020
mysqljavascripthtmldockerphp
OpenHMD
Media
Multi-Platform Open Source driver for AR/VR/XR devices with stable ABI.
2020
openglopencvvulkanc99libusb
OpenKeychain (OpenPGP for Android)
Security
OpenKeychain: Easy PGP for Android
2016
androidopenpgp
OpenMRS
Science and medicine
Write Code, Save Lives.
2025202420232022202120202019201820172016
javahtml5groovyxmlhibernate10 more
OpenMS
Science and medicine
OpenMS GSoC: Advancing Algorithms & AI for Biomedical Insights
2025
pythoncythonc++rpytorch
OpenMined
Programming languages
Lowering the barrier of entry to privacy preserving technology
20212020
deep learningfederated learninghomomorphic encryptionsecure multi-party computationdifferential privacy5 more
OpenRefine
Data
A power tool for working with messy data
20242020
javascriptjava
OpenSIPS
Social and communication
A multi-purpose Open Source SIP proxy/server for carriers, telecoms or ITSPs
2018
cpythonmysqlscripting
OpenStreetMap
Data
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
OpenWISP
End user applications
The Hackable Network Management System
202520242023202220212020201920182017
pythonjavascriptdjangoopenwrtraspberry pi3 more
OpnTec
Social and communication
Developing Open Event Solutions for Everyone
2018
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.
2016
pythoncythonmachine learningqt
Orcasound
Science and medicine
Humans & AI listening together to save the whales.
202220212020
pythonjavascriptreactraspberry pielixir1 more
Organic Maps
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
2022
pythonmysqld3typescriptpandas
P2PSP.org
Media
Shaping the future Internet TV
201820172016
pythonandroidc++ioswebrtc4 more
PAL Robotics
Other
Enhance people’s quality of life through Robotics
2025
pythonjavascriptc++
PEcAn Project
Science and medicine
Develop and promote tools for ecosystem modeling
202520242023202220212020201920182017
cpostgresqljavascriptrphp6 more
PLASMA-UMass
Programming languages
PLASMA explores ways to make programming languages faster, safer, and easier.
2016
javascriptcc++goscala
PMD
Programming languages
An extensible cross-language static code analyzer.
20182017
javaxmljavaccantlrxpath
PRISM Model Checker
Science and medicine
PRISM is a tool for formally verifying the correctness of probabilistic systems.
2016
javac++
Peragro
Other
Digital Assets Managed Neatly
2016
pythonjavascriptdjangoblendercelery
Percona
Data
Unbiased open source database experts.
20202019
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
Other
Physical Web GSoC project based on the Physical Web
20172016
pythonarduinointernet of thingsbeaconsbeacon3 more
Pidgin Instant Messenger
Social and communication
A universal chat client.
2021
cgtkgstreamer
Pitivi
End user applications
Self-expression through filmmaking
2023202120202019
cgtkpython 3gstreamerpython
Plan 9 Foundation
Operating systems
Lightweight distributed computing
2021
cgolangdistributed systemsconcurrency
Plone Foundation
Web
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
2018
candroidjavafirmwarecad
Point Cloud Library
Science and medicine
Standalone, large scale, open project for 2D/3D image and point cloud processing
20212020
cmakecppdevopspythoncuda2 more
Polly Labs
Programming languages
Promoting Polyhedral Compilation
20182017
llvmpollyppcginteger set librarypencil3 more
Polypheny
Data
The Most Versatile Data Management Platform
202420222021
javascriptjavasqlangular
Portland State University
Other
Individual and Academic Open Source
20172016
open hardwarelanguage-agnostic
PostgreSQL
Data
The Most Advanced Open Source Relational Database
202520242023202220212020201920182017
cpostgresqlperlsqlrdbms6 more
Postman
Data
The Future is API-First
2024202320212020
javascriptnode.jsgraphqlopenapirest api3 more
PowerDNS
Other
PowerDNS provides open source DNS software
2022
c++DNS
Probot
Programming languages
Automate and improve GitHub workflows
2018
javascriptgithubnode.js
Processing Foundation
Programming languages
To empower all people to learn to program
20252023202220212020201920182017
pythonjavascriptandroidjavaopengl4 more
Project Mesa
Science and medicine
Mesa: Agent-based modeling in Python 3+
20252024
pythonui/uxLLMsVector Operationsobject oriented programming
Project PANOPTES
Science and medicine
Discover New Worlds
2019
python 3arduinocloud
Project WikiLoop
Other
Contribute to open knowledge at scale - heritage preservation and translation
2021
pythonjavamediawiki
Prometheus-Operator
Infrastructure and cloud
Managing Prometheus atop Kubernetes
20252024
prometheusgokuberneteskubernetes operators
Public Lab
Science and medicine
Tools for communities to measure pollution
202220212019201820172016
javascriptruby on railswebrtcleafletruby2 more
Purr Data
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
QC-Devs
Science and medicine
Sustainable software for quantum chemistry & more
20252024
pythongithubc++juliajupyter
QEMU
Infrastructure and cloud
Open source machine emulator and virtualizer
202520232022202120202019201820172016
cassemblykvmpythonlinux2 more
Qdrant
Data
Vector Search Database for the new AI generation.
2023
pythonjavascriptrust
Qubes OS
Operating systems
A reasonably secure operating system
202120202017
cpythonxenshelllinux1 more
Quill.org
Web
Helping millions of learners become better writers and critical thinkers
2018
postgresqljavascriptreactrubyrails
R project for statistical computing
Science and medicine
R software for statistical computing & graphics
2025202420232022202120202019201820172016
cc++rfortranjavascript1 more
RADAR-base
Science and medicine
Improve people's quality of life using patient generated data
2022
javakotlindockerangularkafka
RTEMS Project
Operating systems
A real-time operating system for Earth & Space
2025202420232022202120202019201820172016
cpythonembedded systemswafposix3 more
Radare
Security
Radare2 - Reverse Engineering Framework and Toolset
2020201820172016
crustpythonnode.jsqt3 more
React Native Elements
Programming languages
Cross Platform React Native UI Toolkit
2021
javascriptreactreact native
ReactOS Foundation
Operating systems
Open your windows to freedom!
2022202120202019201820172016
cc++phpwin32nt
Read the Docs
Programming languages
Documentation Simplified
20192018
pythonjavascriptdjangosphinxelasticsearch1 more
Red Hen Lab
Data
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
2022
pythonjavascriptTechnical writing
Rizin
Security
Rizin reverse engineering framework and toolset
20252024202320222021
cpythonc++qtgo
RoboComp
Other
Open-source framework to develop robot components
2022202120202019201820172016
pythonc++cmakezeroc icegnu/linux10 more
Robolectric
Operating systems
Fast unit testing runtime for Android
20242022
androidjavajvmasm
Rspamd
Security
Rspamd is an email framework and spam filter
202520182017
cluacmakejavascriptmachine learning3 more
Ruby
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
Web
Ruby on Rails is web framework that optimizes for programmer happinness.
20182017
ruby on railsrubyhtml
SCoRe Lab
End user applications
SCoRe Lab develops FOSS softwares for everyone!!!
20232022202120202019201820172016
pythonandroidjavagolanghadoop10 more
SPDX
Other
An open ISO standard for SBOMs
2023202220212020201920182017
cpythonjavagithubrdf5 more
SQLancer
Data
Automatically testing database systems
20252023
javasql
SW360
Web
Software supply chain management done right !
2025
javareactcouchdbSpringBoot
SageMath
Science and medicine
Open-source mathematics software system
2025202420232022202120202019201820172016
pythoncythonjavascriptc++c1 more
Salesforce
Infrastructure and cloud
From the kernel to the browser, open source projects from Salesforce.
2019
javascriptreactnode.jsscalaapache spark
Samba
Other
Opening windows to a wider world
2021202020192017
cpythonsmbcifs
Scala Center
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
20242023
pythonc++mpiawsServerless
Scilab
End user applications
Cross-platform numerical computational package and programming language.
201820172016
cjavac++fortranscilab2 more
ScummVM
End user applications
Adventure and RPG preservation project
2025202420232022202120202019201820172016
openglc++assemblysdlc3 more
SeaQL
Data
Building data intensive applications in Rust
2022
mysqlpostgresqlrustsqlsqlite
Seastar
Programming languages
Framework for writing high-performance server applications on modern hardware
2018
linuxcppframeworkdpdktcp
Semi Technologies
Science and medicine
The ML-first vector search engine
2022
pythonmachine learninggolangvectorsnatural language processing
Shaka Player
Media
An open-source JavaScript library to play adaptive media.
2021
pythonjavascriptweb developmentvideo codecsui/ux
Shogun
Science and medicine
Unified and efficient Machine Learning
2020201920172016
pythonc++cmakeswigc5 more
Sigmah
End user applications
Java/GWT platform for humanitarian project management
20172016
javagwtpostgresql
Society for Arts and Technology (SAT)
Media
Technological tools for creativity and industry
202520232022
pythonjavascriptopenglc++supercollider2 more
Software Heritage
Data
The universal source code archive
202220212019
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
2016
cpythonjavascriptmachine learningnetworking
Space @ Virginia Tech
Science and medicine
Space@VT is devoted to the investigation of the space environment.
2018
pythonmysqljavascriptmongodbd3
St. Jude Children's Research Hospital
Programming languages
Find cures. Saving children.
2025
rustWDL
Stemformatics
Science and medicine
Stemformatics is a web-based pocket dictionary for stem cell scientists.
2018
pythonpostgresqljavascript
Ste||ar group
Science and medicine
Shaping a Scalable Future
202520242023202220212020201820172016
c++cudaopenclhigh performance computingparallel processing8 more
Stichting SU2
Science and medicine
Computational Fluid Dynamics and Optimization
20252024
pythonc++
Stony Brook University Biomedical Informatics
Science and medicine
Advance biomedical knowledge through innovative data science research
201820172016
big datamedical imaginghadoopbioinformaticsc++4 more
Stratosphere Laboratory, Czech Technical University in Prague
Data
Using machine learning and security to help others
20242023
pythonjavascriptredisflaskdocker1 more
Streetmix
End user applications
Design, remix, and share your neighborhood street, all in your browser.
2018
postgresqljavascriptmongodbreactredux
Submitty
End user applications
Homework Autograding and Course Management Tools
202420232022202020192018
pythonc++databaseswebhtml5 more
Sugar Labs
End user applications
Learning software for children
2025202420232022202120202019201820172016
pythonjavascriptgtk+androidgtk7 more
Swift
Programming languages
Fast, safe, and expressive programming language
20252024202320222021202020192018
llvmc++cmakeswiftios3 more
SymPy
Science and medicine
SymPy is a Python library for symbolic mathematics
2025202420232022202120202019201820172016
pythonc++numpyjupyter
SymbiFlow
Programming languages
A completely FOSS toolchain for FPGAs.
202120202019
verilogfpgaxilinxpythonc1 more
Synfig
Media
Open-source 2D animation software
2025202420232022202120202019
c++gtkgtkmmpythonc++11
Systers Community
Other
Helping women find their potential in code. You are not alone.
2018
pythonjavascriptandroidruby on railsios
Systers, an Anita Borg Institute community
Other
Helping women find their potential in code.
20172016
pythonmysqlandroidruby on railsios2 more
TARDIS RT Collaboration
Science and medicine
Exploring supernovae made easy
2025202420232022
pythonnumbanumpyjupyterpandas
TARDIS SN
Science and medicine
Exploring supernovae made easy
202120202016
cpythoncythonnumbanumpy2 more
TEAMMATES @ National University of Singapore
Web
An online feedback management system for education
201820172016
javascriptjavahtmlcssgoogle app engine1 more
TLA+
Programming languages
TLA+ is a formal specification language used to design, model and verify systems
2018
javaocamltla+eclipsesmt
Tarantool
Data
Lighting fast in-memory DBMS with JIT onboard
20222021
cluasqlpythonc++
TensorFlow
Data
TensorFlow is a ML framework for everyone.
20232022202120202019
pythoncc++machine learningdata analysis7 more
The Apache Software Foundation
Web
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
Security
Honeypots and Threat Intelligence R&D
2025202420232022202120202019201820172016
pythonandroidmachine learninghtmljavascript13 more
The JPF team
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
2016
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!
20252024
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
2019
cperlregular expressionsperl6perl5
The Postgres Operator
Data
A project to create an open-sourced managed Postgresql service for Kubernetes
2019
postgresqlgolangkubernetesoperatorpatroni
The Qt Project
Programming languages
The Qt Project co-ordinates the development of the Qt software framework.
2018
openglqtqmlc++11cpp
The Rust Foundation
Programming languages
A language empowering everyone
20252024
pythonrust
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
Web
Defend yourself against tracking and surveillance.
20252023202220172016
cpythonjavascriptgolangbrowser extensions3 more
The Vega Project at the University of Washington
Web
Declarative formats & Applications for Creating, Saving & Sharing Visualizations
20192018
javascriptreacttypescriptd3.jsd32 more
The Wine Project
Other
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
TianoCore
Operating systems
Modern, open source, UEFI BIOS firmware
20222021
cpythonrustgolanguefi
Tiled
End user applications
A free, easy to use and flexible 2D level editor.
2017
githubc++qtgit
TimVideos.us
Media
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
2016
pythonjavascript
Tokio
Programming languages
The asynchronous run-time for the Rust programming language.
2019
rusttokio_rs
Tungsten Fabric
Infrastructure and cloud
Secure software defined networking for any cloud, anywhere.
2019
pythonlinuxcc++networking1 more
Typelevel
Programming languages
We do functional programming together
2025
linuxnode.jsjvmscalawasm
UC OSPO
Science and medicine
Amplifying Research Impact through Open Source
202520242023
pythoncc++visualizationVLSI3 more
UCSC Xena
Science and medicine
Helping biologists see the bigger picture in diverse cancer genomics data
201920182017
pythonjavascriptreactclojured31 more
Unicode, Inc.
Programming languages
Bringing internationalization to software!
20252024
javac++rustunicode
Unikraft
Operating systems
A Fast and Secure Unikernel SDK
2025202420232022
cpythonxenkvmassembly language1 more
Unitex/GramLab
Programming languages
Unitex/GramLab is an open source, multilingual corpus processing suite
2016
javac++
Uramaki LAB
End user applications
The User Experience LAB based on IA
20252024
pythonjavascripthtmlcssFirebase
Urban Energy Systems Laboratory, Empa
Science and medicine
HUES is a platform for modeling & analysis of distributed energy systems
20172016
pythongismilpfast fluid dynamics
ViSP
Media
Visual tracking and visual servoing library
20182017
c++visionc
VideoLAN
End user applications
Open Source Multimedia for everyone!
2025202420232022202120202019201820172016
copenglc++qtassembly8 more
WSO2
Other
Comprehensive and open source middleware platform that spans the breadth of SOA
20172016
javaweb servicesmiddlewaresoadistributed computing
Wagtail
Web
The powerful Python CMS for modern websites
2025202420232022
pythonjavascriptdjango
Waycrate
End user applications
Writing robust tools for the Wayland protocol
20252024
cc++rustwaylandZig
Wayland
Media
Wayland is a protocol for windowing systems on both desktops and embedded
2016
copenglwaylandxmlkms
Wellcome Sanger Tree of Life
Science and medicine
Genome analysis for all species
202520242022
pythonjavascriptrustnextflowmachine learning2 more
Wikimedia Foundation
Web
Bringing free educational content to the world
202420232022202120202019201820172016
javascripthtmlphpcssjquery5 more
Wireshark
Security
Wireshark is the world's foremost network protocol analyzer.
2020
cc++luaqtcmake1 more
WorldBrain.io - Verifying the Internet
End user applications
Bookmarking extension that works like your brain - full-text search everything.
20182017
javascriptreactjsreactbrowser extensiondatproject
X.Org Foundation
Media
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
XWiki
Web
The Advanced Open Source Enterprise Wiki
20232022202120202019201820172016
javascriptjavahtml5css3velocity1 more
Xapian Search Engine Library
Data
Fast, scalable and flexible search
20202019201820172016
androidc++golangunicodeswig1 more
Xen Project
Infrastructure and cloud
Bringing the power of virtualization everywhere
2017
linuxqemufree/netbsdasm/c/c++ocaml
Xfce
Operating systems
Lightweight and flexible linux desktop environment
20222021
cpythonjavascriptgtkvala
Xi Editor
End user applications
A modern text editor with a backend written in Rust.
20192018
rustswift
Xiph.Org Foundation
Media
Open-source and royalty free multimedia
2021
rustassemblyarmx86c language
Zendalona
End user applications
FOSS accessibility solutions for visually impaired
20252024
pythonjavascriptandroidgtkqt
Zenodo
Science and medicine
A free and open digital archive for the long-tail of science.
2017
pythonpostgresqlflaskangularjselasticsearch
Zulip
End user applications
Organized chat for distributed teams
2025202420232022202120202019201820172016
pythonjavascriptdjangoandroidios5 more
ZynAddSubFX
Media
An open source musical software synthesizer with a wide range of possibilities
2019
cc++openglrubymidi1 more
aimacode
Programming languages
Code for the book "Artificial Intelligence: A Modern Approach"
2019201820172016
pythonjavascriptjavamachine learningartificial intelligence3 more
appleseed
Media
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
caMicroscope
Science and medicine
Toolkit for cancer imaging research
2024202320212020
pythonjavascriptjavatensorflowmedical imaging3 more
checkstyle
Programming languages
Helps to adheres of Java coding standard
2025202420232022202120202017
javaantlrxpathartificial-intelligence
coala
Programming languages
Linting and Fixing Code for All Languages
2021201920182017
pythondjangopython 3antlremberjs5 more
coreboot
Operating systems
Fast, secure and flexible BIOS firmware
20232022202020192016
cassemblyopen hardwareassemblerarm1 more
dora-rs
End user applications
Simplify robotic apps with low latency & distributed dataflow
2025
pythonrosc++rustAutonomous drive
eunomia-bpf
Operating systems
Unleash eBPF Potential with our tools and runtimes
2024
linuxllvmebpfwebassembly
freifunk
Operating systems
Free and open wireless networks
202520242023202220212019201820172016
cluaopenwrtolsrbatman12 more
gRPC
Infrastructure and cloud
A high performance, open-source universal RPC framework
20182016
distributed systemsnetworkingmicro-servicesscalabilityhttp/23 more
gVisor
Operating systems
An application kernel for containers that provides efficient defense-in-depth
2021
linuxcc++golangposix
gprMax
Science and medicine
Simulating electromagnetic wave propagation
20252024202320212019
pythoncythoncudaopenmpmpi1 more
illumos.org
Operating systems
Open Source successor of OpenSolaris
2017
unixdtraceillumosopenzfszfs
jQuery Foundation
Web
jQuery Foundation - home of jQuery, Dojo and many other JavaScript libraries
2016
javascripthtml5cssjquery
kro | Kube Resource Orchestrator
Infrastructure and cloud
Simplify Kubernetes API and resource management.
2025
prometheusgolangkubernetescontroller-runtimeCEL
languagetool.org
End user applications
Style and grammar checker
2018
javascriptjavamachine learningtensorflowai
libcamera
Media
Provide an open source camera stack for linux
202320222021
cc++linux kernelqt5gstreamer1 more
libssh
Programming languages
The SSH library
2025202420232022
csshcigitsftp
libvirt
End user applications
Virtualization abstraction library
20242022202120202019201820172016
cxenqemucontainerskvm4 more
lowRISC
Other
Open to the core - collaborative engineering for open source silicon and tools
202020172016
linuxverilogfpgachiselc++3 more
mlpack
Science and medicine
a fast, flexible machine learning library
202420232022202120202019201820172016
c++pythonmachine learningdeep learningtemplates2 more
moja global
Data
Collaboration for change
2022
pythonjavascriptc++dockerData-Science
mypy
Programming languages
A static type checker for Python and a compiler for type-annotated Python
20212020
python
oVirt
End user applications
Open virtual datacenter management for all
2017
pythonjavakvm
omegaUp
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
ownCloud
Infrastructure and cloud
A safe home for all your data
20172016
javascripthtmlsqlphpcss3 more
phpBB Forum Software
Social and communication
phpBB is the most widely used free and open-source forum solution.
20182017
mysqljavascriptphpcsssymfony1 more
phpMyAdmin
Data
A web interface for MySQL written in PHP
201920182017
mysqljavascriptphpjquerycakephp1 more
rocket.chat
Social and communication
Open source communications platform for the AI age
202520242023202220212020201920182017
javascriptwebrtcmeteor.jsmongoandroid14 more
sktime
Data
A unified framework for ML with time series
20242022
pythongithubsphinxscikit-learn
stdlib
Science and medicine
The fundamental numerical library for JavaScript
20252024
cjavascriptnode.jstypescriptwebassembly
strace
Development tools
Linux syscall tracer
2022202120202019201820172016
clinuxshell scriptmakegit4 more
syslog-ng
Data
Enhanced log daemon, w/ wide range of I/O methods
202220212020201920182016
cpythonjavarustbig data6 more
vitrivr
Data
The multimedia search engine
202120182016
javamachine learningwebdatabasescomputer vision7 more
webpack
Web
webpack is the module bundler for web projects
20252024202020192018
javascriptnode.jsweb developmenthtml5/css3webassembly3 more
wxWidgets
Programming languages
Library for creating portable native GUIs in C++
2017
c++gtk+win32cocoa
xpra
Media
screen for X11, remote access for MS Windows and Mac OS
20192018
pythoncythonjavascriptcompressionremote access1 more
xrdesktop
Media
XR for the Linux Desktop
2021
cvulkanwaylandglibopenxr