OSI Affiliates

Becoming an OSI Affiliate is an excellent opportunity for nonprofit organizations, open source projects & communities, educational institutions (K12 & Higher Ed.), and user groups to more deeply engage in and with the open source community. Becoming a Affiliate is an ideal way for Open Source projects, and the communities that support them, to promote and extend the OSI mission, and contribute to the continued awareness and adoption of Open Source software. If your organization believes in Open Source Software and your community wants to support our work, like all of the dedicated organizations listed below, please become a member today.
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.Net Foundation
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ADMB Foundation
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American International University
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Apereo Foundation
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Association Francophone des Utilisateurs de Logiciels Libres
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Associazione LibreItalia
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BigBlueButton
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Brandeis University
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Breathing Games
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CAVO
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CENATIC
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Creative Commons
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Darbar College
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Debian
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Democracy Lab
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Drupal Association
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Eclipse Foundation
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FOSSASIA
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FreeBSD Foundation
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FUSS Project
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Geek.Zone
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GNOME
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Indiana University
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Internet Systems Corporation
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Journal of Open Source Software
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Kaiyuanshe
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KDE
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Libre Space Foundation
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Linux Australia Incorporated
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Linux Foundation
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Linux Professional Institute
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LinuxFest Northwest
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MariaDB
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Marist College
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Mautic
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Mifos Initiative
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Mozilla
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Network Time Foundation
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OASIS Open
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Odoo Community Association
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Open Culture Foundation
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Open edX
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Open Information Security Foundation
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Open Infrastructure Foundation
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Open Preservation Foundation
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Open Research Institute
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Open Source Community Africa
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Open Source Design
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Open Source Hong Kong
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Open Source Matters
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Open Source Software Institute
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Open Source Sweden
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OpenForum Europe
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OpenJS Foundation
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OpenMRS
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OpenProject
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OpenStreetMap Foundation
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OpenUK
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OW2
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Plone Foundation
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Powering Potential
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Python Software Foundation
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Rensselaer Center for Open Source
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Sahana
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Snowdrift.coop
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Software Freedom Conservancy
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Software Liberty Association of Taiwan
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SouJava
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Sourcefabric
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SysArmy
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Teckids e.V.
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TeX Users Group (TUG)
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The New Zealand Open Source Society
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The Perl Foundation
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The Xerte Project
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TikiWiki
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TODO Group
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TYPO3 Association
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University of Southern Queensland
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Wikimedia
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WordPress Foundation

To promote and protect open source software and communities...

For over 20 years the Open Source Initiative (OSI) has worked to raise awareness and adoption of open source software, and build bridges between open source communities of practice. As a global non-profit, the OSI champions software freedom in society through education, collaboration, and infrastructure, stewarding the Open Source Definition (OSD), and preventing abuse of the ideals and ethos inherent to the open source movement.

Open source software is made by many people and distributed under an OSD-compliant license which grants all the rights to use, study, change, and share the software in modified and unmodified form. Software freedom is essential to enabling community development of open source software.