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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1-clause BSD License (BSD-1-Clause) BSD-1-Clause
Academic Free License (“AFL”) v. 3.0 AFL-3.0
Adaptive Public License 1.0 APL-1.0
Apache License, Version 2.0 Apache-2.0
Apache Software License, version 1.1 (Apache-1.1)
Apple Public Source License 2.0
Artistic License (Perl) 1.0
Artistic License 1.0 (Artistic-1.0)
Artistic License 2.0
Attribution Assurance License
Boost Software License 1.0 (BSL-1.0)
BSD+Patent
Cea Cnrs Inria Logiciel Libre License, version 2.1 (CECILL-2.1)
CERN Open Hardware Licence Version 2 – Permissive
CERN Open Hardware Licence Version 2 – Strongly Reciprocal
CERN Open Hardware Licence Version 2 – Weakly Reciprocal
COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0 CDDL-1.0
Common Development and Distribution License 1.0 CDDL-1.0
Common Public Attribution License Version 1.0 (CPAL-1.0)
Common Public License Version 1.0
Common Public License, version 1.0 (CPL-1.0) CPL-1.0
Computer Associates Trusted Open Source License 1.1 (CATOSL-1.1) CATOSL-1.1
Cryptographic Autonomy License version 1.0 (CAL-1.0) CAL-1.0
CUA Office Public License (CUA-OPL-1.0)
Eclipse Public License -v 1.0
Eclipse Public License 1.0 (EPL-1.0)
Eclipse Public License version 2.0 EPL-2.0
eCos License version 2.0 eCos-2.0
Educational Community License, Version 1.0 (ECL-1.0)
Educational Community License, Version 2.0 (ECL-2.0) ECL-2.0
Eiffel Forum License, version 1 (EFL-1.0)
Eiffel Forum License, Version 2
Entessa Public License Version. 1.0 (Entessa)
EU DataGrid Software License (EUDatagrid)
European Union Public License, version 1.2 (EUPL-1.2)
Fair License (Fair)
Frameworx License 1.0 (Frameworx-1.0)
GNU Affero General Public License version 3 AGPL-3.0-only
GNU General Public License version 2 GPL-2.0
GNU General Public License version 3 GPL-3.0-only
GNU General Public License, version 1
GNU Lesser General Public License version 2.1 LGPL-2.1
GNU Lesser General Public License version 3 LGPL-3.0-only
GNU LGPL
GNU Library General Public License version 2 LGPL-2.0-only
Historical Permission Notice and Disclaimer (HPND)
IBM Public License Version 1.0 (IPL-1.0)
Intel Open Source License (Intel)
IPA Font License (IPA)
ISC License (ISC)
Jabber Open Source License
JAM License
LaTeX Project Public License, Version 1.3c (LPPL-1.3c)
Lawrence Berkeley National Labs BSD Variant License (BSD-3-Clause-LBNL)
Licence Libre du Québec – Permissive (LiLiQ-P) version 1.1
Licence Libre du Québec – Réciprocité (LiLiQ-R) version 1.1
Licence Libre du Québec – Réciprocité forte (LiLiQ-R+) version 1.1
Lucent Public License Version 1.02 (LPL-1.02)
Lucent Public License, Plan 9, version 1.0 (LPL-1.0)
Microsoft Public License (MS-PL)
Microsoft Reciprocal License (MS-RL)
MirOS License (MirOS)
MIT No Attribution License MIT-0
MITRE Collaborative Virtual Workspace License (CVW)
Motosoto Open Source License – Version 0.9.1 (Motosoto)
Mozilla Public License (MPL), version 1.0 (MPL-1.0)
Mozilla Public License 1.1 (MPL-1.1) MPL-1.1
Mozilla Public License 2.0 (MPL-2.0) MPL-2.0
Mulan Permissive Software License v2 (MulanPSL – 2.0) MulanPSL-2.0
Multics License (Multics)
NASA Open Source Agreement v1.3 (NASA-1.3)
NAUMEN Public License (Naumen)
Nokia Open Source License Version 1.0a (NOKIA)
Non-Profit Open Software License version 3.0 (NPOSL-3.0)
NTP License (NTP)
Open Group Test Suite License (OGTSL)
Open Logistics Foundation License v1.3 OLFL-1.3
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) OLDAP-2.8
OSET Public License version 2.1
PHP License 3.0 (PHP-3.0)
PHP License 3.01 (PHP-3.01) PHP-3.01
Python License (Python-2.0)
RealNetworks Public Source License Version 1.0 (RPSL-1.0)
Reciprocal Public License 1.5 (RPL-1.5)
Reciprocal Public License, version 1.1
SIL OPEN FONT LICENSE (OFL-1.1)
Simple Public License (SimPL-2.0)
Sun Industry Standards Source License (SISSL)
Sun Public License, Version 1.0 (SPL-1.0)
The 2-Clause BSD License BSD-2-Clause
The 3-Clause BSD License BSD-3-Clause
The CNRI portion of the multi-part Python License (CNRI-Python)
The European Union Public License, version 1.1
The MIT License MIT
The Nethack General Public License (NGPL)
The OCLC Research Public License 2.0 License (OCLC-2.0)
The Open Software License 3.0 (OSL-3.0)
The PostgreSQL Licence (PostgreSQL)
The Q Public License Version (QPL-1.0) QPL-1.0
The Ricoh Source Code Public License (RSCPL)
The Sleepycat License (Sleepycat)
The Sybase Open Source Licence (Watcom-1.0)
The Universal Permissive License (UPL), Version 1.0
The University of Illinois/NCSA Open Source License (NCSA)
The Unlicense Unlicense
The Vovida Software License v. 1.0 (VSL-1.0)
The W3C® SOFTWARE NOTICE AND LICENSE (W3C)
The wxWindows Library Licence (WXwindows)
The X.Net, Inc. License (Xnet)
The zlib/libpng License (Zlib)
Unicode, Inc. License Agreement – Data Files and Software
Upstream Compatibility License v1.0
Zero-Clause BSD (0BSD)
Zope Public License 2.1
Zope Public License Ver.2.0 (ZPL-2.0)