Casbin
Authorization library that supports RBAC and ABAC
- 2026
- –
- Cycles
- 3
- Projects
- 22
- Trend
DIRECTORY
522 organizations since 2016
Filter by stack, capacity and track record. Every number comes from Google's public archive.
freifunk
Free and open wireless networks
- 2026
- –
- Cycles
- 9
- Projects
- 74
- Trend
GCP Scanner
Security scanning tool for Google Cloud
- 2026
- –
- Cycles
- 1
- Projects
- 3
- Trend
Gentoo Foundation
A flexible, source-based Linux distribution.
- 2026
- –
- Cycles
- 8
- Projects
- 25
- Trend
Global Alliance for Genomics and Health
The Global Alliance for Genomics and Health (GA4GH) was formed to help accelerate the potential of genomic medicine to advance human health. It brings together over 400 leading genome institutes and centers with IT industry leaders to create global standards and tools for the secure, privacy respecting and interoperable sharing of Genomic data.
- 2026
- 4
- Cycles
- 10
- Projects
- 49
- Trend
GnuTLS
C library implementing TLS and DTLS
- 2026
- –
- Cycles
- 1
- Projects
- 2
- Trend
Joplin
Joplin is a note-taking app designed with strong security and privacy in mind. It features end-to-end encryption (E2EE), ensuring the notes remain protected during synchronization. Users can store notes locally or sync them via trusted services like Nextcloud, Dropbox, or self-hosted servers, retaining full data ownership.
- 2026
- 5
- Cycles
- 5
- Projects
- 22
- Trend
libssh
This project is for programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote programs. With its Secure FTP implementation, you can play with remote files easily, without third-party programs others than libcrypto (from openssl), libgcrypt or mbedTLS.
- 2026
- 1
- Cycles
- 5
- Projects
- 7
- Trend
lowRISC
Open to the core - collaborative engineering for open source silicon and tools
- 2026
- –
- Cycles
- 3
- Projects
- 10
- Trend
Metasploit
The Metasploit Framework is both a penetration testing system and a development platform for creating security tools and exploits. The framework is used by network security professionals to perform penetration tests, system administrators to verify patch installations, product vendors to perform regression testing, and security researchers world-wide. The framework is written in the Ruby programming language and includes components written in C, many flavors of Assembly, Python, Powershell, PHP, and other languages.
- 2026
- 3
- Cycles
- 7
- Projects
- 15
- Trend
Nmap Security Scanner
Swiss Army knife of network discovery and security auditing
- 2026
- –
- Cycles
- 2
- Projects
- 9
- Trend
OWASP Foundation
As the world’s largest non-profit organization concerned with software security, OWASP:
- 2026
- 26
- Cycles
- 10
- Projects
- 128
- Trend
P2PSP.org
Shaping the future Internet TV
- 2026
- –
- Cycles
- 3
- Projects
- 5
- Trend
Python Software Foundation
Python is a programming language that lets you work more quickly and integrate your systems more effectively.
- 2026
- 13
- Cycles
- 11
- Projects
- 290
- Trend
Qubes OS
Qubes OS is a security- and privacy-focused free-and-open-source operating system that provides a safer platform for communications, information management, and general computing.
- 2026
- 3
- Cycles
- 4
- Projects
- 7
- Trend
Radare
Radare2 - Reverse Engineering Framework and Toolset
- 2026
- –
- Cycles
- 4
- Projects
- 15
- Trend
Ruby
The Ruby organization collects mentors and students working on the Ruby language (MRI), the Ruby packaging system (Bundler, RubyGems, and RubyGems.org), and other Ruby projects. Any Ruby OSS project is eligible to be included in the Ruby GSOC organization.
- 2026
- 5
- Cycles
- 8
- Projects
- 43
- Trend
SCoRe Lab
SCoRe Lab develops FOSS softwares for everyone!!!
- 2026
- –
- Cycles
- 8
- Projects
- 149
- Trend
SPDX
An open ISO standard for SBOMs
- 2026
- –
- Cycles
- 7
- Projects
- 29
- Trend
The FreeBSD Project
FreeBSD is an operating system renowned for its advanced networking capabilities, robust security features, and exceptional performance. It is used across a wide spectrum of computing environments, ranging from the most heavily trafficked websites to desktop computers and embedded devices. Our source code is the foundation for well-known products such as the Sony PlayStation, Junos (the operating system powering Juniper routers), and elements of Apple's macOS. Additionally, FreeBSD runs on servers at Netflix that stream terabits of video content every second.
- 2026
- 11
- Cycles
- 11
- Projects
- 87
- Trend
The Honeynet Project
The Honeynet Project is a leading international 501c3 non-profit security research organization, dedicated to investigating the latest attacks and developing open source security tools to improve Internet security. With Chapters around the world, our volunteers have contributed to fight against malware (such as Conficker), discovering new attacks and creating security tools used by businesses and government agencies all over the world.
- 2026
- 8
- Cycles
- 11
- Projects
- 109
- Trend
The Libreswan Project
Libreswan implements the IKE and IPsec standards for VPN. These standards have been created and are still maintained at the Internet Engineering Task Force (IETF) in the IPsecME Working Group. Libreswan is used as a remote access VPN as well as site-to-site and cloud encryption.
- 2026
- 3
- Cycles
- 7
- Projects
- 13
- Trend
The Tor Project
Defend yourself against tracking and surveillance.
- 2026
- –
- Cycles
- 5
- Projects
- 19
- Trend
WSO2
Comprehensive and open source middleware platform that spans the breadth of SOA
- 2026
- –
- Cycles
- 2
- Projects
- 20
- Trend
Contributor counts are accepted projects per cycle.
A TO Z
Every organization since 2016
A
- AboutCode
- Academy Software Foundation
- Accord Project
- AerospaceResearch.net
- AFLplusplus
- aimacode
- Alaska
- Amahi
- Android Graphics Tools Team
- AnitaB.org Open Source
- AnkiDroid
- AOSSIE
- AOSSIE - The Australian National University's Open-Source Software Innovation and Education
- Apache DataFusion
- Apache Software Foundation
- Apertium
- Apertus Association
- API Client Tools at Google
- API Dash
- appleseed
- ArchC
- Arduino
- ArduPilot
- ASCEND
- AsyncAPI
- Audacity
B
C
- C2SI
- Cadasta
- caMicroscope
- Canadian Centre for Computational Genomics
- Carbon Language
- Casbin
- CASTOR
- cBioPortal for Cancer Genomics
- CBMI@UTHSC
- CCExtractor Development
- Celluloid
- Center for Research in Open Source Software (CROSS)
- Center for Translational Data Science
- Ceph Foundation
- CERN SFT
- CERN-HSF
- CGAL Project
- CHAOSS
- Chapel
- Checker Framework
- checkstyle
- CHIPS Alliance
- Chromium
- Cilium
- CircuitVerse.org
- City of Boston
- CiviCRM
- Classical Language Toolkit
- CLiPS, University of Antwerp
- Clojure
- CloudCV
- CMU Sphinx
- CNCF
- coala
- Cockpit Project
- Computational Biology @ University of Nebraska-Lincoln
- Computational Science and Engineering at TU Wien
- Continuous Delivery Foundation
- Conversations.im
- Copyleft Games
- coreboot
- Creative Commons
- CRIU
- Cuneiform Digital Library Initiative (CDLI)
- CVAT
- CVXPY
D
- D Language Foundation
- Dart
- Data for the Common Good
- DatenLord
- DBpedia
- Debian
- DeepChem
- DeepPavlov
- Department of Biomedical Informatics, Emory University
- Developers Italia
- Digital Impact Alliance (DIAL) at UN Foundation
- Discourse
- Distributed and Unified Numerics Environment (DUNE)
- Django Software Foundation
- dora-rs
- Drupal Association
E
F
G
- Gambit - Software Tools for Game Theory
- Gambit: The package for computation in game theory
- Ganeti
- GCP Scanner
- GDevelop
- Gemini CLI
- Genes, Genomes and Variation
- GENIVI Alliance
- Genome Assembly and Annotation
- Gentoo Foundation
- GeomScale
- German Center for Open Source AI
- Git
- GitHub
- GitLab
- Global Alliance for Genomics and Health
- GNOME Foundation
- GNSS-SDR
- GNU Compiler Collection (GCC)
- GNU Image Manipulation Program
- GNU Mailman
- GNU Mailman Project
- GNU Octave
- GNU Project
- GNU Radio
- GnuTLS
- Godot Engine
- Google DeepMind
- Google FHIR SDK
- GPAC
- gprMax
- GRAME
- Graphite
- GraphQL Foundation
- Green Navigation
- gRPC
- GRR Rapid Response
- gVisor
I
- illumos.org
- INCF
- Inclusive Design Institute
- Indic Project
- Inkscape
- Inria Foundation
- Institut für Angewandte Informatik (InfAI) e.V.
- Institute for Artificial Intelligence
- Intel Video and Audio for Linux
- InterMine
- International Catrobat Association
- Internet Archive
- Internet Health Report
- Internet Systems Consortium
- Invesalius
- IOOS
- Ivy (lets-unify.ai)
J
K
L
M
- Machine Learning for Science (ML4SCI)
- MacPorts
- MalariaGEN
- Mantis
- MapAction
- MariaDB
- Mathesar
- Matrix.org
- Mautic
- Mayor's Office of New Urban Mechanics
- MBDyn
- McGill Space Institute
- MDAnalysis
- Measurement Lab
- Media Cloud
- MediaPipe
- Meshery
- MetaBrainz Foundation Inc
- MetaCall
- Metaflow
- Metasploit
- MGGG Redistricting Lab
- Micro Electronics Research Lab - UITU
- Microkernel devroom
- MIT App Inventor
- Mixxx
- MLLAM
- mlpack
- Mobile Robot Programming Toolkit (MRPT)
- ModSecurity
- MoFA Org
- MoganLab
- Moira
- moja global
- Monado
- Mono Project
- Moodle
- MoveIt
- Mozilla
- MuseScore
- mypy
- MZmine
- MZmine and MS-DIAL
N
O
- omegaUp
- Open Bioinformatics Foundation (OBF)
- Open Chemistry
- Open Chromosome Collective
- Open Climate Fix
- Open Data Kit
- Open Detection
- Open Ephys
- Open Food Facts
- Open Genome Informatics
- Open HealthCare Network
- Open Roberta
- Open Robotics
- Open Science Initiative for Perfusion Imaging
- Open Science Labs
- Open States
- Open Technologies Alliance - GFOSS
- Open Transit Software Foundation
- Open3D team
- OpenAFS
- OpenAstronomy
- OpenCensus
- OpenCV
- OpenELIS Global
- OpenEMR
- OpenHMD
- OpenKeychain (OpenPGP for Android)
- OpenMined
- OpenMRS
- OpenMS
- OpenRefine
- OpenSIPS
- OpenStreetMap
- openSUSE Project
- OpenVINO Toolkit
- OpenWISP
- OpnTec
- Oppia Foundation
- Orange – Data Mining Fruitful & Fun
- Orcasound
- Organic Maps
- OSGeo (Open Source Geospatial Foundation)
- OSU Open Source Lab
- Our World In Data
- oVirt
- OW2
- OWASP Foundation
- ownCloud
P
- P2PSP.org
- PAL Robotics
- PEcAn Project
- Peragro
- Percona
- Performance Co-Pilot
- Pharo Consortium
- phpBB Forum Software
- phpMyAdmin
- Physical Web Project
- Pidgin Instant Messenger
- Pitivi
- Plan 9 Foundation
- PLASMA-UMass
- Plone Foundation
- PMD
- Pocket Science Lab
- Point Cloud Library
- Polly Labs
- Polypheny
- Portland State University
- PostgreSQL
- Postman
- PowerDNS
- preCICE
- PRISM Model Checker
- Probot
- Processing Foundation
- Project Mesa
- Project PANOPTES
- Project WikiLoop
- Prometheus-Operator
- Public Lab
- Purr Data
- Python Software Foundation
R
S
- SageMath
- Salesforce
- Samba
- Scala Center
- Scalable Parallel Computing Laboratory
- Scilab
- SCoRe Lab
- ScummVM
- SeaQL
- Seastar
- Semi Technologies
- Shaka Player
- Shogun
- Sigmah
- sktime
- Society for Arts and Technology (SAT)
- Software and Computational Systems Lab at LMU Munich
- Software Heritage
- Soletta Project
- Space @ Virginia Tech
- SPDX
- SQLancer
- St. Jude Children's Research Hospital
- stdlib
- Ste||ar group
- Stemformatics
- Stichting SU2
- Stony Brook University Biomedical Informatics
- strace
- Stratosphere Laboratory, Czech Technical University in Prague
- Streetmix
- Submitty
- Sugar Labs
- SW360
- Swift
- SymbiFlow
- SymPy
- Synfig
- syslog-ng
- Systers Community
- Systers, an Anita Borg Institute community
T
- Tarantool
- TARDIS RT Collaboration
- TARDIS SN
- TEAMMATES @ National University of Singapore
- TensorFlow
- The Apache Software Foundation
- The Center for Connected Learning and Computer-Based Modeling
- The ENIGMA Team
- The FreeBSD Project
- The Honeynet Project
- The JPF team
- The Julia Language
- The Libreswan Project
- The Linux Foundation
- The Mifos Initiative
- The Monarch Initiative
- The NetBSD Foundation
- The ns-3 Network Simulator Project
- The OpenROAD Initiative
- The P4 Language Consortium
- The Palisadoes Foundation
- The Perl Foundation
- The Postgres Operator
- The Qt Project
- The Rust Foundation
- The Terasology Foundation
- The Tor Project
- The Vega Project at the University of Washington
- The Wine Project
- TianoCore
- Tiled
- Timelab Technologies Ltd.
- TimVideos.us
- TLA+
- Tokio
- Tungsten Fabric
- Typelevel
U
W
X