522 organizations since 2016

• 

  aimacode

  Programming languages

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

  2026

  –

  Cycles

  4

  Projects

  16

  Trend

  PythonJavaScriptJavaMachine learning+4
• 

  AnkiDroid

  End user applications

  Memorize anything with AnkiDroid!<br/><br/>

  2026

  2

  Cycles

  5

  Projects

  12

  Trend

  JavaScriptAndroidJavaGradle+3
• 

  Berkman Klein Center for Internet and Society

  Other

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

  2026

  –

  Cycles

  4

  Projects

  20

  Trend

  JavaScriptRuby On RailsGoMeteor.js+6
• 

  BuildmLearn

  End user applications

  Building m-Learning applications

  2026

  –

  Cycles

  1

  Projects

  4

  Trend

  PythonDjangoBootstrapAndroid
• 

  CircuitVerse.org

  Science and medicine

  CircuitVerse is an easy to use digital logic circuit simulator which aims at providing a platform to create, share and learn digital circuits. It can run on almost any device without the need for installing any software. The platform has been designed for use by students, professionals and hobbyists alike. The vision is to develop a community around the platform that will aid students to self-learn digital logic design. The platform is currently used by several universities worldwide. Apart from the simulator, users can create, learn, collaborate and share their work. Teachers can create groups and host assignments on the platform. The platform’s impact has been more evident than ever in the Covid 19 pandemic as CircuitVerse enabled schools and colleges to move their courses online.

  2026

  6

  Cycles

  8

  Projects

  38

  Trend

  PostgreSQLJavaScriptBootstrapRails+7
• 

  CMU Sphinx

  Media

  Fast, Accurate, Flexible Open Source Speech Recognition

  2026

  –

  Cycles

  1

  Projects

  11

  Trend

  CPythonJavaScriptCross-platform+1
• 

  Copyleft Games

  Media

  Game libraries, frameworks, and development toolkits

  2026

  –

  Cycles

  2

  Projects

  4

  Trend

  CPythonOpenGLJavaScript+1
• 

  International Catrobat Association

  Programming languages

  Computational thinking for all with free visual coding apps The Catrobat project develops useful frameworks to create games, animations, or apps easily within a short time. This set of mobile creativity tools for smartphones is inspired by the well-known Scratch framework by the Lifelong Kindergarten Group at the MIT Media Lab. The motivation behind the project is that programming is an important cultural technique on the same level as mathematics and physics, from a practical as well as from a philosophical point of view. Our aim thus is to popularize the skills needed to program from an early age in a fun and engaging way that will facilitate the spread of its adoption among young people all over the world.

  2026

  12

  Cycles

  11

  Projects

  96

  Trend

  JavaScriptAndroidJavaHTML5+9
• 

  JdeRobot

  Other

  Robotics applications are typically distributed, made up of a collection of concurrent asynchronous components which communicate using some middleware (ROS messages, DDS...). Building robotics applications is a complex task. Integrating existing nodes or libraries that provide already solved functionality, and using several tools may increase the software robustness and shorten the development time. JdeRobot provides several tools, libraries and reusable nodes. They have been written in C++, Python or JavaScript.

  2026

  5

  Cycles

  10

  Projects

  53

  Trend

  PythonCC++ROS+3
• 

  languagetool.org

  End user applications

  Style and grammar checker

  2026

  –

  Cycles

  1

  Projects

  2

  Trend

  JavaScriptJavaMachine learningTensorFlow+1
• 

  Learning Equality

  End user applications

  Learning Equality is an education technology nonprofit focused on fostering student-centered learning and advancing organizations working with underserved teachers and learners globally. Through community-driven innovation and strategic partnerships, we provide offline-first, open-source digital tools and implementation support to help them thrive. We create and support open-source technology that directly and focally addresses the infrastructural and resource equity gaps that further marginalize learners with limited Internet. We started by enabling offline access to Khan Academy's videos and exercises and grew to become a key player in the global education technology landscape. For the past 13 years we’ve focused on boosting learning outcomes in some of the most challenging contexts, supporting disconnected learning in refugee camps, rural schools, out-of-school programs, and more. Learning Equality develops and maintains Kolibri, an adaptable set of open tools specially designed to support teaching and learning with tech but without the Internet for the third of the world that still lacks access to connectivity. Kolibri is centered around an offline-first learning platform that runs on a variety of low-cost and legacy devices. It is complemented by a curricular tool, a library of open educational materials, and a toolkit of resources to support training and implementation. These tools are open and available in a variety of languages to better support learners and educators globally. As a community-driven nonprofit, Learning Equality works closely to co-design Kolibri with a core network of collaborators, including national NGOs, UN agencies, government, and corporate partners. We also adopt a needs-based approach, constantly gathering insights from our community to inform the development of our tools. Through its do-it-yourself adoption model and strategic collaborations, Learning Equality has conservatively reached 13 million learners and educators in every country in the world. Given our offline access and distribution model, we learn about usage of Kolibri through a combination of telemetry ping backs of high level, aggregate, anonymized statistics, data from partners, and use of our Kolibri Data Portal. Since instances of Kolibri never need to connect to the Internet to be used, we do not know about usage across every instance, which is why this is an informed estimate from years of data.

  2026

  3

  Cycles

  6

  Projects

  19

  Trend

  PythonJavaScriptDjangoVue.js
• 

  Learning Unlimited

  End user applicationsNew in 2026

  Learning Unlimited's mission is to create educational opportunities for high school and middle school students, and to provide leadership and teaching opportunities for college students. Learning Unlimited strives to engage students of all ages in an educational setting to share and discover their passions. To accomplish this, Learning Unlimited links local universities with their communities. Our open source work revolves around building and maintaining website infrastructure for these chapters to use.

  2026

  3

  Cycles

  1

  Projects

  3

  Trend

  PythonJavaScriptDjangoHTML+1
• 

  lowRISC

  Other

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

  2026

  –

  Cycles

  3

  Projects

  10

  Trend

  LinuxVerilogFPGAChisel+4
• 

  MIT App Inventor

  Development tools

  MIT App Inventor is a free, open source web app that anyone can use to build mobile apps. It has been used by over 8 million people worldwide who have built more than 30 million apps. It is available in twelve different languages and used by people from ages 13 and up.

  2026

  3

  Cycles

  10

  Projects

  48

  Trend

  AndroidJavaHTMLJavaScript+6
• 

  Moodle

  Social and communication

  Empowering educators to improve our world

  2026

  –

  Cycles

  4

  Projects

  7

  Trend

  MySQLPostgreSQLJavaScriptPHP+4
• 

  Mozilla

  Web

  Keeping the Internet open and accessible to all.

  2026

  –

  Cycles

  5

  Projects

  75

  Trend

  PythonJavaScriptC++Rust+5
• 

  omegaUp

  End user applications

  omegaUp is a non-profit organization (501c3) aimed to increase the number of talented Software Engineers in Latin America. Our open source platform omegaUp.com lets students immerse in a learning environment that fosters self paced learning of computer science skills with a democratic access to state-of-the-art learning tools.

  2026

  3

  Cycles

  6

  Projects

  13

  Trend

  PythonMySQLPHPTypeScript+1
• 

  Open Roberta

  Programming languages

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

  2026

  –

  Cycles

  4

  Projects

  8

  Trend

  JavaScriptJavaPythonGo+2
• 

  Oppia Foundation

  End user applications

  The Oppia project aims to empower learners across the globe by providing access to high-quality, engaging education. We envision a world where access to high-quality education is not a privilege but a human right.

  2026

  7

  Cycles

  11

  Projects

  84

  Trend

  PythonJavaScriptAngularjsCSS+7
• 

  Pocket Science Lab

  Science and medicine

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

  2026

  –

  Cycles

  1

  Projects

  2

  Trend

  CAndroidJavaFirmware+1
• 

  Processing Foundation

  Programming languages

  Our mission is to promote software learning within the arts, artistic learning within technology-related fields, and to celebrate the diverse communities that make these fields vibrant, liberatory, and innovative. Our goal is to support people of all backgrounds in learning how to program and make creative work with code, especially those who might not otherwise have access to tools and resources. We also believe that some of the most radical futures and innovative technologies are being built by communities that have been pushed to the margins by dominant tech. We hope to support those who have been marginalized by technology in continued self-determination by providing time, space, and resources.

  2026

  6

  Cycles

  9

  Projects

  93

  Trend

  PythonJavaScriptAndroidJava+5
• 

  Quill.org

  Web

  Helping millions of learners become better writers and critical thinkers

  2026

  –

  Cycles

  1

  Projects

  1

  Trend

  PostgreSQLJavaScriptReactRuby+1
• 

  SageMath

  Science and medicine

  Mathematicians, scientists, researchers, and students need a powerful tool for their work or study. SageMath is a freely available open-source mathematical software system bundling the functionality of many software libraries, exposing their features in a common interface and extending on top of this with its own powerful algorithms. By leveraging the flexibility and universality of the underlying Python interpreter, SageMath is able to accommodate for a vast range of their requirements.

  2026

  4

  Cycles

  11

  Projects

  59

  Trend

  PythonCythonJavaScriptC+++2
• 

  Submitty

  End user applications

  Submitty is an open source programming assignment submission system with secure and automated testing and grading, efficient manual TA/instructor grading, and additional tools for overall course management and communication between students and instructional staff. Submitty was launched by the Rensselaer Center for Open Source Software (RCOS) in 2014.

  2026

  3

  Cycles

  7

  Projects

  22

  Trend

  PythonC++DatabasesWeb+6

Contributor counts are accepted projects per cycle.