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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Boost Software License 1.0 BSL-1.0
Common Public Attribution License Version 1.0 CPAL-1.0
Cryptographic Autonomy License CAL-1.0
GNU Affero General Public License version 3 AGPL-3.0-only
ISC License ISC
Microsoft Public License MS-PL
Microsoft Reciprocal License MS-RL
MirOS License MirOS
Non-Profit Open Software License version 3.0 NPOSL-3.0
NTP License NTP
Open Group Test Suite License OGTSL
Reciprocal Public License 1.5 RPL-1.5
Simple Public License SimPL-2.0