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Get ready to vote for OSI’s board of directors in 2025

Members Newsletter – February 2025 2025 is well under way, and it’s time to elect a new Board of Directors...

February 5, 2025 Post
Standards and the presumption of conformity

If you have been following the progress of the Cyber Resilience Act (CRA), you may have been intrigued to hear...

December 10, 2024 Post
How the OSI checks if new licenses comply with the Open Source Definition

Earlier this month, we announced completion of the project to review the list of Approved Licenses. The Open Source community...

September 26, 2023 Post
FRAND and Open Standards

Back in 2006, a detailed discussion at the Open Source Initiative led to the creation of a statement about what...

April 25, 2012 Post
NASA Open Source Agreement v1.3

THIS OPEN SOURCE AGREEMENT ("AGREEMENT") DEFINES THE RIGHTS OF USE, REPRODUCTION, DISTRIBUTION, MODIFICATION AND REDISTRIBUTION OF CERTAIN COMPUTER SOFTWARE ORIGINALLY...

October 31, 2006 License
The Nethack General Public License

Copyright (c) 1989 M. Stephenson (Based on the BISON general public license, copyright 1988 Richard M. Stallman) Everyone is permitted...

October 31, 2006 License
Open Group Test Suite License

Preamble The intent of this document is to state the conditions under which a Package may be copied, such that...

October 31, 2006 License
Members Newsletter – November 2024

After more than two years of collaboration, information gathering, global workshopping, testing, and an in-depth co-design process, we have an Open...

November 6, 2024 Post
Must-See Recordings Now Available

Members Newsletter – November 2025 Dear OSI supporters, October was punctuated by lots of direct connections with the community.  In...

November 6, 2025 Post
OSI welcomes the European Union’s “Tech Sovereignty” package

This week, the European Union (EU) published its “Tech Sovereignty” package, with a vision that puts Open Source at the...

June 5, 2026 Post
The Open Source AI Definition – 1.0

version 1.0 See FAQsSee list of endorsementsSee ChecklistEndorse the OSAID Preamble Why we need Open Source Artificial Intelligence (AI) Open...

October 28, 2024 Page
The zlib/libpng License

Copyright (c) <year> <copyright holders> This software is provided 'as-is', without any express or impliedwarranty. In no event will the...

October 31, 2006 License