####52°North Initiative for Geospatial Open Source Software GmbH####
- Skill(s): javascript, java, ogc standards, web services
####aimacode####
- Skill(s): python, java, javascript
####AOSSIE - The Australian National University's Open-Source Software Innovation and Education####
- Skill(s): scala, lisp, llvm, python, postgresql
####Apache Software Foundation####
- Skill(s): java, ruby, python, javascript, couchdb
####ArchC####
- Skill(s): c++, python, archc
####ASCEND####
- Skill(s): python, c, c/c++
####BeagleBoard.org####
- Skill(s): beaglebone, javascript, python, linux, c
####Beam Community####
- Skill(s): erlang, elixir, xmpp, beam, mqtt
####Berkman Center for Internet and Society####
- Skill(s): ruby on rails, javascript, sql/nosql, meteor.js, go
####BioJS####
- Skill(s): javascript, python
####Biomedical Informatics, Emory University####
- Skill(s): java, medical imaging, deep learning, hadoop, python
####Blender Foundation####
- Skill(s): c, c++, python, opengl
####Boston University / XIA####
- Skill(s): xia, c, linux kernel, advanced data structures
####BRL-CAD####
- Skill(s): opencl, opengl, c/c++, python, tcl
####BuildmLearn####
- Skill(s): python, django, bootstrap, android
####Canadian Centre for Computational Genomics (C3G) - Montreal node####
- Skill(s): python, r-project, javascript, sql, git
####Catrobat####
- Skill(s): android, java, html5, web, javascript
####cBioPortal for Cancer Genomics####
- Skill(s): java, javascript, web, html, big data
####CCExtractor Development####
- Skill(s): c, video, ffmpeg, subtitles, linux
####Celluloid####
- Skill(s): ruby, multi-threading, multi-core, zeromq, high-resolution timers
####Ceph####
- Skill(s): c/c++, python, object-storage
####CERN SFT####
- Skill(s): c++, python, javascript, clang
####Chapel####
- Skill(s): python, chapel, c, c++, high performance computing
####CiviCRM####
- Skill(s): php, javascript, mysql, angularjs, d3js
####Classical Language Toolkit####
- Skill(s): python, javascript, java
####CloudCV####
- Skill(s): python, javascript, lua, caffe, torch
####Computational Biology @ University of Nebraska-Lincoln####
- Skill(s): webgl, javascript, mysql, react
####Computational Science and Engineering at TU Wien####
- Skill(s): javascript, html, css, java, c++
####Copyleft Games####
- Skill(s): python, opengl, c
####coreboot####
- Skill(s): c, assembly, open hardware
####CVXPY####
- Skill(s): python
####D Foundation####
- Skill(s): dlang, c++
####dbpediaspotlight####
- Skill(s): java, scala, rdf, python, nosql
####Debian Project####
- Skill(s): python, c, c++, ruby, django
####Discourse####
- Skill(s): ruby, ruby on rails, javascript, ember, docker
####Distributed and Unified Numerics Environment (DUNE)####
- Skill(s): c++, python, cmake
####Django Software Foundation####
- Skill(s): python, django
####Drupal####
- Skill(s): php, symfony, sql, javascript, drupal 8
####Eclipse Foundation####
- Skill(s): java, geospatial, c/c++
####Fedora Project####
- Skill(s): python, flask, postgresql, html5, javascript
####FFmpeg####
- Skill(s): c, asm, git
####FOSDEM VZW####
- Skill(s): ruby on rails, postgresql, git
####FOSSASIA####
- Skill(s): javascript, android, python, java, json api
####Free and Open Source Silicion Foundation####
- Skill(s): open hardware, fpga, compiler, python, javascript
####FreeBSD####
- Skill(s): c/c++, clang, llvm, shell script, make
####Freifunk####
- Skill(s): openwrt, olsr, batman, c, lua
####Gambit - Software Tools for Game Theory####
- Skill(s): javascript
####Ganeti####
- Skill(s): python, haskell, kvm, xen, virtualization
####Genes, Genomes and Variation####
- Skill(s): mysql, javascript, perl
####Gentoo Foundation####
- Skill(s): shell script, c/c++, python, perl, sql
####Git####
- Skill(s): c, shell script, git
####GitHub####
- Skill(s): git, atom, node.js, ruby, c#
####Global Alliance for Genomics & Health####
- Skill(s): python, java, protobuf, sql
####GNOME####
- Skill(s): c, python, javascript, gtk+
####gnss-sdr####
- Skill(s): c/c++, c++11, c++14, gnss
####GNU Mailman####
- Skill(s): python, email, django
####GNU Octave####
- Skill(s): hg, c++
####GNU Project####
- Skill(s): posix, c, lisp, python, eiffel
####GNU Radio####
- Skill(s): c++, python, software radio, dsp, rf
####GPAC####
- Skill(s): mp4, dash, mp4box, javascript, c++
####Green Navigation####
- Skill(s): javascript, postgresql, polymer, go, electromobility
####gRPC####
- Skill(s): distributed systems, networking, micro-services, scalability, http/2
####Health Information Systems Programme####
- Skill(s): java, android, javascript, reactjs, gradle
####Homebrew####
- Skill(s): ruby, git, osx
####Inclusive Design Institute####
- Skill(s): javascript, jquery, html5, css, node.js
####Indic Project####
- Skill(s): android, python, javascript, ruby on rails, c++
####Inkscape####
- Skill(s): c++, python, svg, css, gtk+
####International Neuroinformatics Coordinating Facility####
- Skill(s): c++, python, gpu, javascript, java
####Java Pathfinder Team####
- Skill(s): java, jvm, android, distributed systems
####JBoss Community####
- Skill(s): java, android, ide
####Jenkins Project####
- Skill(s): java, groovy, jenkins, css, html
####Joomla!####
- Skill(s): php, css, html, javascript, jquery
####jQuery Foundation####
- Skill(s): javascript, html5, css, jquery
####JSK Robotics Laboratory####
- Skill(s): euslisp, openhrp, openrtm, ros
####KDE####
- Skill(s): qt, cmake, c++, php
####KolibriOS####
- Skill(s): fasm, flat assembler, x86 assembly, i386, i586
####LabLua####
- Skill(s): lua, luarocks, elasticsearch, netbsd, céu
####LibreOffice####
- Skill(s): c++, python, java, android, opengl
####Libvirt####
- Skill(s): c, qemu, xen, containers
####Liquid Galaxy Project####
- Skill(s): javascript, ros, gis, cesium
####lowRISC####
- Skill(s): verilog, fpga, chisel, c++, linux
####MariaDB####
- Skill(s): mysql, mariadb, c, perl
####Matrix.org####
- Skill(s): react, android, ios, golang, python
####MBDyn, Department of Aerospace Science and Technology at Politecnico di Milano####
- Skill(s): c++
####McGill Space Institute####
- Skill(s): python, sql, databases, big data
####MetaBrainz Foundation####
- Skill(s): python, perl, postgresql, javascript
####Mifos Initiative####
- Skill(s): java, javascript, angularjs, android, mysql
####MIT Media Lab####
- Skill(s): java, html/javascript, android
####Mixxx DJ Software####
- Skill(s): c++11, c++, qt, audio, opengl
####mlpack: a scalable C++ machine learning library####
- Skill(s): c++
####Mobile Robot Programming Toolkit (MRPT)####
- Skill(s): c++, ros, opencv, cmake, qt
####ModSecurity####
- Skill(s): waf, web application firewall
####Moodle####
- Skill(s): php, jquery, mysql, postgresql, javascript
####MovingBlocks####
- Skill(s): java, lwjgl, opengl, blender, gradle
####Mozilla####
- Skill(s): c++, python, javascript, html, rust
####MuseScore####
- Skill(s): qt, c/c++, qml
####National Resource for Network Biology (NRNB)####
- Skill(s): c++, java, javascript, php, python
####Netfilter project####
- Skill(s): firewall, linux kernel, networking
####Nmap Security Scanner####
- Skill(s): c/c++, lua, python, c, c++
####NumFOCUS####
- Skill(s): python, javascript, julia, r
####Open Bioinformatics Foundation####
- Skill(s): perl, python, ruby, java, haskell
####Open Chemistry####
- Skill(s): c++, opengl, python, javascript, webgl
####Open Detection####
- Skill(s): c/c++, cmake, opencv, pcl, caffe
####Open Ephys####
- Skill(s): c++, juce
####Open Genome Informatics####
- Skill(s): python, java, html/javascript, nodejs, gwt
####Open Lighting Project####
- Skill(s): c++, python, javascript, embedded, c
####Open Source Robotics Foundation####
- Skill(s): ros, gazebo
####OpenAstronomy####
- Skill(s): python, julia, c, numpy
####OpenCV####
- Skill(s): c++, python, machine learning, computer vision
####OpenKeychain (OpenPGP for Android)####
- Skill(s): android, openpgp
####OpenMRS####
- Skill(s): java, groovy, html5, xml, hibernate
####OpenStreetMap####
- Skill(s): postgis, java, ruby, javascript, opengl
####openSUSE####
- Skill(s): ruby on rails, angularjs, docker, linux, ruby
####Oppia Foundation####
- Skill(s): javascript, app engine, python, css, angularjs
####Orange – Data Mining Fruitful & Fun####
- Skill(s): python, cython, qt, machine learning
####OSGeo - The Open Source Geospatial Foundation####
- Skill(s): python, sql, c, ogc standards, c++
####OSU Open Source Lab####
- Skill(s): python, rest, javascript, ruby
####OWASP Foundation####
- Skill(s): python, php, javascript, java, html
####ownCloud####
- Skill(s): javascript, php, css, html, sql
####P2PSP.org####
- Skill(s): python, c++, webrtc, android, ios
####Peragro####
- Skill(s): python, blender, javascript, celery, django
####Performance Co-Pilot####
- Skill(s): golang, ruby, java, linux kernel, windows
####Physical Web Project####
- Skill(s): internet of things, beacons, python, arduino
####PLASMA-UMass####
- Skill(s): javascript, c/c++, scala, go
####Plone Foundation####
- Skill(s): python, zope, javascript, rest, nosql
####Portland State University####
- Skill(s): open hardware, language-agnostic
####PRISM Model Checker####
- Skill(s): java, c++
####Public Lab####
- Skill(s): javascript, ruby on rails, leaflet, webrtc
####Python Software Foundation####
- Skill(s): python, mercurial
####QEMU####
- Skill(s): c, assembly, kvm
####R project for statistical computing####
- Skill(s): r, c, c++, fortran
####radare####
- Skill(s): c, rust
####ReactOS####
- Skill(s): c/c++, c
####Red Hen Lab####
- Skill(s): high performance computing, machine learning, opencv, audio procesing, multimodal analysis
####Robocomp####
- Skill(s): c++, python, zeroc ice, cmake, gnu/linux
####RTEMS Project####
- Skill(s): c, python, waf, embedded systems
####Ruby####
- Skill(s): ruby
####Ruby Science Foundation####
- Skill(s): ruby, c programming, jruby, c/c++
####Sage Mathematical Software System####
- Skill(s): python, javascript, cython, c++
####Scala####
- Skill(s): scala, jvm
####Scilab Enterprises####
- Skill(s): scilab, c++, java, c, fortran
####ScummVM####
- Skill(s): c++, sdl, opengl, assembly
####Shogun Machine Learning Toolbox####
- Skill(s): c++, python, swig, cmake, django
####Sigmah####
- Skill(s): java, gwt
####Soletta Project####
- Skill(s): c, python, javascript, networking, machine learning
####Stony Brook University Biomedical Informatics####
- Skill(s): medical imaging, bioinformatics, hadoop, big data
####strace####
- Skill(s): linux, c, git, shell script, make
####Sugar Labs####
- Skill(s): python, javascript, gtk+
####Sustainable Computing Research Group ( SCoRe )####
- Skill(s): java, android, hadoop, python, golang
####SymPy####
- Skill(s): python, c++
####Systers, an Anita Borg Institute Community####
- Skill(s): python, android, ios, mysql, ruby on rails
####TARDIS-SN####
- Skill(s): python, cython, c
####TEAMMATES @ National University of Singapore####
- Skill(s): java, app engine, javascript, css, html
####The Apertium Project####
- Skill(s): c++, python, perl, xml, finite-state technologies
####The Center for Connected Learning and Computer-Based Modeling####
- Skill(s): javascript, scala, java, html5, css
####The Honeynet Project####
- Skill(s): android, machine learning, honeypots, python, html/javascript
####The Julia Language####
- Skill(s): julia, atom, c++, javascript, c
####The Linux Foundation####
- Skill(s): c, c++, python, mysql, cups
####The LLVM Compiler Infrastructure####
- Skill(s): c, c++, llvm, clang
####The Monarch Initiative####
- Skill(s): semantic web, javascript, text mining, named entity recognition, ontologies
####The NetBSD Foundation####
- Skill(s): bsd, security, networking, c programming, kernel
####The STE||AR Group####
- Skill(s): parallel processing, high performance computing, distributed computing, c++, scalability
####The syslog-ng project####
- Skill(s): c, java, python, big data, rust
####The Tor Project####
- Skill(s): c, javascript, golang, python, browser extensions
####The Wine Project####
- Skill(s): c, opengl, directx, x11, win32
####Timelab Technologies Ltd.####
- Skill(s): python, javascript
####TimVideos.us####
- Skill(s): vhdl, verilog, fpga, python, c
####Tux4Kids####
- Skill(s): compiler, html5, android, javascript, sdl
####Unitex/GramLab####
- Skill(s): java, c++
####Urban Energy Systems Laboratory, Empa####
- Skill(s): python, milp, gis
####Vert.x####
- Skill(s): java, reactive, javascript, groovy, micro-services
####VideoLAN / VLMC Project####
- Skill(s): opengl, c++, c, assembly, qt
####vitrivr####
- Skill(s): java, web, computer vision, machine learning, databases
####Wayland####
- Skill(s): opengl, wayland, c, xml, kms
####Wikimedia Foundation####
- Skill(s): php, javascript, html, css, jquery
####WSO2####
- Skill(s): middleware, java, soa, distributed computing, web services
####X.Org Foundation####
- Skill(s): c, c++, opengl, vulkan, opencl
####Xapian Search Engine Library####
- Skill(s): c++, unicode, swig, android, golang
####XWiki####
- Skill(s): java, javascript, html5, css3, velocity
####Zulip Open Source Project####
- Skill(s): python, javascript, django, android, ios