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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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
Common Public License Version 1.0 CPL-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
GNU General Public License, version 1
Lucent Public License, Plan 9, version 1.0 LPL-1.0
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
PHP License 3.0 PHP-3.0
Reciprocal Public License, version 1.1 RPL-1.1
The European Union Public License, version 1.1 EUPL-1.1
Zope Public License 2.0 ZPL - 2.0