522 organizations since 2016

• 

  Alaska

  Science and medicine

  Alaska Project Ideas are mentored by the researchers and collaborators of the University of Alaska and supported by other open-source entities in Alaska, such as Alaska Dev Alliance.

  2026

  8

  Cycles

  3

  Projects

  20

  Trend

  PythonMySQLJavaMATLAB+1
• 

  checkstyle

  Programming languages

  Checkstyle is a development tool to help programmers write Java code that is easy to read and adheres to a coding standard. Our utility automates the process of checking Java code to spare humans of this boring (but important) task. This makes it ideal for projects that want to enforce a coding standard. Each and every check also forces our users who are not familiar with these standards to read them and makes them think about why these standards exist.

  2026

  6

  Cycles

  8

  Projects

  27

  Trend

  JavaAntlrXpathArtificial-intelligence
• 

  Debian

  Operating systems

  The Debian Project is an association of Free Software developers who volunteer their time and effort in order to produce and maintain a completely free operating system Debian. Since its launch, the Debian project has grown to comprise more than 1,000 members with official developer status, alongside many more volunteers and contributors. Today, Debian encompasses over 50,000 packages of free, open source applications and documentation.

  2026

  7

  Cycles

  9

  Projects

  85

  Trend

  CPythonDjangoRuby+7
• 

  Eclipse Foundation

  Programming languages

  The Eclipse Foundation provides our global community of individuals & organizations with a mature, scalable, and business-friendly environment for OSS collaboration and innovation.

  2026

  6

  Cycles

  10

  Projects

  74

  Trend

  CC++JavaGeospatial+15
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  IOOS

  Science and medicine

  U.S. IOOS is a national and regional partnership working to provide ocean, coastal and Great Lakes observations, data, tools, and forecasts to improve safety, enhance the economy, and protect our environment. Our primary purpose is to provide free and open data about the state of our oceans and Great Lakes to our users. These data are fundamental to understanding the health of our marine ecosystems, to monitor the climate signal as captured in oceanographic conditions, and to provide predictions about the future state of our oceans and coasts.

  2026

  7

  Cycles

  5

  Projects

  29

  Trend

  PythonBig Data ScienceOcean TechnologyOcean Science+4
• 

  JBoss Community

  Web

  JBoss Community is a community of open source projects. The community hosts a diverse set of projects that are written in various programming languages. The primary language is Java, however there are also projects that are written in Go, Rust, Ruby, PHP, Node and other languages.

  2026

  8

  Cycles

  8

  Projects

  60

  Trend

  AndroidJavaIDEAsciidoctor+11
• 

  MariaDB

  Data

  MariaDB Foundation is the non-profit organization behind MariaDB Server, the fastest growing open source databases. MariaDB Foundation's mission is to ensure the continuity of the MariaDB Server code as well as foster and facilitated collaboration within the MariaDB ecosystem. As part of GSoC, MariaDB Foundation seeks to bring more developers into the MariaDB Server (and related projects) code base.

  2026

  8

  Cycles

  11

  Projects

  47

  Trend

  CMySQLMariaDBPerl+6
• 

  National Resource for Network Biology (NRNB)

  Science and medicine

  The National Resource for Network Biology (NRNB, https://nrnb.org) organizes the development of free, open-source software technologies to enable network-based visualization, analysis, and biomedical discovery. Biomedical research is increasingly dependent on knowledge expressed in terms of networks, including gene, protein and drug interactions, cell-cell and viral-host communication, and vast social networks. Our technologies enable researchers to assemble and analyze these networks and to use them to better understand biological systems and, in particular, how they fail in disease. The NRNB mentoring organization includes projects such as Cytoscape (https://cytoscape.org/), WikiPathways (https://wikipathways.org/), SBML (https://sbml.org/), SBGN (https://sbgn.github.io/) and others. This is a great opportunity to work at the intersection of biology and computing! For example, Cytoscape is downloaded over 24,000 times per month by researchers. We take mentoring seriously and are proud of our 96% success rate (https://nrnb.org/alumni.html#gsoc-tab) with former students and projects. But don’t take our word for it, read testimonials from prior NRNB students (https://nrnb.org/testimonials.html#student-tab) and mentors (https://nrnb.org/testimonials.html#mentor-tab). Find out more about the software projects being developed in coordination with NRNB at our website (https://nrnb.org). Also refer to our GSoC page (https://nrnb.org/gsoc.html) for additional resources and application tips.

  2026

  7

  Cycles

  11

  Projects

  126

  Trend

  PythonJavaScriptJavaC+++10
• 

  Open Technologies Alliance - GFOSS

  Science and medicine

  Open Technologies Alliance (GFOSS) is a non-profit organization, with 37 Universities and Research Centers as its shareholders. Our main goal is to promote Openness. GFOSS – Open Technologies Alliance is a platform for Open Standards, Free Software, Open Content, Open Data & Open Hardware in Greece. The major Greek Universities and Research Centers participate in GFOSS – Open Technologies Alliance, while leading members of the Greek community of developers play a key role in the implementation of our policies. Through our initiatives we aspire to contribute and coordinate the efforts of groups of volunteers, public servants, university researchers and students enabling them to form the backbone of Greek FOSS development and implementation. GFOSS is one of the strategic actors for the promotion of OSS throughout Greece (see https://joinup.ec.europa.eu/sites/default/files/inline-files/OSS%20Country%20Intelligence%20Report_GR.pdf ). Many public administrations and academic institutions collaborate with GFOSS to implement open source projects and through Google Summer of Code we give the opportunity to students to actively engage in the production and the actual implementation of an open source project. GFOSS also contributes and advises on the development of various open source projects related to e-government and digital transformation in Greece (e.g. https://howto.gov.gr/ - https://forma.gov.gr/) and actively promotes the use of Open Source software and hardware in the Greek primary and secondary education through the Open Educational Technologies Competition (https://openedtech.ellak.gr/ )

  2026

  7

  Cycles

  9

  Projects

  77

  Trend

  PythonMySQLJavaPHP+16
• 

  OpenMRS

  Science and medicine

  OpenMRS provides the foundational, electronic medical record technology for more than 6,500 health facilities in over 80 countries, touching and helping millions of patients throughout the world.

  2026

  8

  Cycles

  11

  Projects

  102

  Trend

  JavaHTML5GroovyXML+11
• 

  OSGeo (Open Source Geospatial Foundation)

  End user applications

  The Open Source Geospatial Foundation (OSGeo) is a not-for-profit organization whose mission is to foster global adoption of open geospatial technology by being an inclusive software foundation devoted to an open philosophy and participatory community-driven development.<br/><br/>

  2026

  6

  Cycles

  11

  Projects

  107

  Trend

  CPythonOgc StandardsC+++6
• 

  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

Contributor counts are accepted projects per cycle.