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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BSD+Patent BSD-2-Clause-Patent
CERN Open Hardware Licence Version 2 – Permissive CERN-OHL-P-2.0
CERN Open Hardware Licence Version 2 – Strongly Reciprocal CERN-OHL-S-2.0
CERN Open Hardware Licence Version 2 – Weakly Reciprocal CERN-OHL-W-2.0
Educational Community License, Version 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 OSET-PL-2.1
SIL OPEN FONT LICENSE OFL-1.1
The Unlicense Unlicense
UNICODE LICENSE V3
Unicode, Inc. License Agreement – Data Files and Software Unicode-DFS-2015
Upstream Compatibility License v1.0 UCL-1.0