OSI Approved Licenses

Open source licenses are licenses that comply with the Open Source Definition – in brief, they allow software to be freely used, modified, and shared. To be approved by the Open Source Initiative (also known as the OSI) a license must go through the Open Source Initiative’s license review process.


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CERN Open Hardware Licence Version 2 – Permissive
CERN Open Hardware Licence Version 2 – Strongly Reciprocal
CERN Open Hardware Licence Version 2 – Weakly Reciprocal
Educational Community License, Version 2.0 (ECL-2.0) ECL-2.0
IPA Font License (IPA)
Lawrence Berkeley National Labs BSD Variant License (BSD-3-Clause-LBNL)
NASA Open Source Agreement v1.3 (NASA-1.3)
Open Logistics Foundation License v1.3 OLFL-1.3
OSET Public License version 2.1
The Unlicense Unlicense
Unicode, Inc. License Agreement – Data Files and Software
Upstream Compatibility License v1.0