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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Academic Free License v. 3.0 AFL-3.0
Apache Software License, version 1.1 Apache-1.1
Artistic License (Perl) 1.0 Artistic-1.0-Perl
Artistic License 1.0 Artistic-1.0
Attribution Assurance License AAL
Blue Oak Model License BlueOak-1.0.0
Common Public License Version 1.0 CPL-1.0
CUA Office Public License CUA-OPL-1.0
Eclipse Public License -v 1.0 EPL-1.0
Educational Community License, Version 1.0 ECL-1.0
Eiffel Forum License, version 1 EFL-1.0
Eiffel Forum License, Version 2 EFL-2.0
Fair License Fair
GNU General Public License, version 1 GPL-1.0
Historical Permission Notice and Disclaimer HPND
Intel Open Source License Intel
Jabber Open Source License
Lucent Public License Version 1.02 LPL-1.02
Lucent Public License, Plan 9, version 1.0 LPL-1.0
MITRE Collaborative Virtual Workspace License
Mozilla Public License 1.1 MPL-1.1
Mozilla Public License, version 1.0 MPL-1.0
Open Software License 2.1 OSL-2.1
Open Software License, version 1.0 OSL-1.0
OpenLDAP Public License Version 2.8 OLDAP-2.8
PHP License 3.0 PHP-3.0
Python License, Version 2 Python-2.0
Reciprocal Public License, version 1.1 RPL-1.1
Sun Industry Standards Source License SISSL
The CNRI portion of the multi-part Python License CNRI-Python
The European Union Public License, version 1.1 EUPL-1.1
The PostgreSQL License PostgreSQL
The University of Illinois/NCSA Open Source License NCSA
The X.Net, Inc. License Xnet
Unicode, Inc. License Agreement – Data Files and Software Unicode-DFS-2016
Zope Public License 2.0 ZPL-2.0
Zope Public License 2.1 ZPL-2.1