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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
  • Other/Miscellaneous
Academic Free License v. 3.0 AFL-3.0
  • Redundant with more popular
Adaptive Public License 1.0 APL-1.0
  • Other/Miscellaneous
Apache License, Version 2.0 Apache-2.0
  • Popular / Strong Community
Apache Software License, version 1.1 Apache-1.1
  • Superseded
Apple Public Source License 2.0 APSL-2.0
  • Non-Reusable
Artistic License (Perl) 1.0 Artistic-1.0-Perl
  • Superseded
Artistic License 1.0 Artistic-1.0
  • Superseded
Artistic License 2.0 Artistic-2.0
  • Other/Miscellaneous
Attribution Assurance License AAL
  • Redundant with more popular
Blue Oak Model License BlueOak-1.0.0
  • Redundant with more popular
Boost Software License 1.0 BSL-1.0
  • Uncategorized
BSD+Patent BSD-2-Clause-Patent
  • Special Purpose
BSD-3-Clause-Open-MPI BSD-3-Clause-Open-MPI
  • Other/Miscellaneous
Cea Cnrs Inria Logiciel Libre License, version 2.1 CECILL-2.1
  • International
CERN Open Hardware Licence Version 2 – Permissive CERN-OHL-P-2.0
  • Special Purpose
CERN Open Hardware Licence Version 2 – Strongly Reciprocal CERN-OHL-S-2.0
  • Special Purpose
CERN Open Hardware Licence Version 2 – Weakly Reciprocal CERN-OHL-W-2.0
  • Special Purpose
CMU License MIT-CMU
COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) CDDL-1.1
  • Uncategorized
Common Development and Distribution License 1.0 CDDL-1.0
  • Popular / Strong Community
Common Public Attribution License Version 1.0 CPAL-1.0
  • Uncategorized
Common Public License Version 1.0 CPL-1.0
  • Superseded
Computer Associates Trusted Open Source License 1.1 CATOSL-1.1
  • Non-Reusable
Cryptographic Autonomy License CAL-1.0
  • Uncategorized
CUA Office Public License CUA-OPL-1.0
  • Voluntarily retired
Eclipse Public License -v 1.0 EPL-1.0
  • Superseded
Eclipse Public License version 2.0 EPL-2.0
  • Popular / Strong Community
eCos License version 2.0 eCos-2.0
  • Non-Reusable
Educational Community License, Version 1.0 ECL-1.0
  • Superseded
Educational Community License, Version 2.0 ECL-2.0
  • Special Purpose
Eiffel Forum License, version 1 EFL-1.0
  • Superseded
Eiffel Forum License, Version 2 EFL-2.0
  • Redundant with more popular
Entessa Public License Version. 1.0 Entessa
  • Non-Reusable
EU DataGrid Software License EUDatagrid
  • Non-Reusable
European Union Public Licence, version 1.2 EUPL-1.2
  • International
Fair License Fair
  • Redundant with more popular
Frameworx License 1.0 Frameworx-1.0
  • Non-Reusable
GNU Affero General Public License version 3 AGPL-3.0-only
  • Uncategorized
GNU General Public License version 2 GPL-2.0
  • Popular / Strong Community
GNU General Public License version 3 GPL-3.0-only
  • Popular / Strong Community
GNU General Public License, version 1
  • Superseded
GNU Lesser General Public License version 2.1 LGPL-2.1
  • Popular / Strong Community
GNU Lesser General Public License version 3 LGPL-3.0-only
  • Popular / Strong Community
GNU Library General Public License version 2 LGPL-2.0-only
  • Popular / Strong Community
Historical Permission Notice and Disclaimer HPND
  • Redundant with more popular
IBM Public License Version 1.0 IPL-1.0
  • Non-Reusable
ICU License ICU
Intel Open Source License Intel
  • Voluntarily retired
IPA Font License IPA
  • Special Purpose
ISC License ISC
  • Uncategorized
Jabber Open Source License
  • Voluntarily retired
JAM License Jam
  • Other/Miscellaneous
LaTeX Project Public License, Version 1.3c LPPL-1.3c
  • Non-Reusable
Lawrence Berkeley National Labs BSD Variant License BSD-3-Clause-LBNL
  • Special Purpose
Licence Libre du Québec – Permissive version 1.1 LiLiQ-P-1.1
  • International
Licence Libre du Québec – Réciprocité forte version 1.1 LiLiQ-Rplus-1.1
  • International
Licence Libre du Québec – Réciprocité version 1.1 LiLiQ-R-1.1
  • International
Los Alamos National Labs BSD-3 Variant
  • Non-Reusable
Lucent Public License Version 1.02 LPL-1.02
  • Redundant with more popular
Lucent Public License, Plan 9, version 1.0 LPL-1.0
  • Superseded
Microsoft Public License MS-PL
  • Uncategorized
Microsoft Reciprocal License MS-RL
  • Uncategorized
MirOS Licence MirOS
  • Uncategorized
MIT No Attribution License MIT-0
  • Other/Miscellaneous
MITRE Collaborative Virtual Workspace License
  • Voluntarily retired
Motosoto Open Source License Motosoto
  • Non-Reusable
Mozilla Public License 1.1 MPL-1.1
  • Superseded
Mozilla Public License 2.0 MPL-2.0
  • Popular / Strong Community
Mozilla Public License, version 1.0 MPL-1.0
  • Superseded
Mulan Permissive Software License v2 MulanPSL-2.0
  • International
Multics License Multics
  • Non-Reusable
NASA Open Source Agreement v1.3 NASA-1.3
  • Special Purpose
NAUMEN Public License Naumen
  • Non-Reusable
Nokia Open Source License Version 1.0a NOKIA
  • Non-Reusable
Non-Profit Open Software License version 3.0 NPOSL-3.0
  • Uncategorized
NTP License NTP
  • Uncategorized
Open Group Test Suite License OGTSL
  • Uncategorized
Open Logistics Foundation License v1.3 OLFL-1.3
  • Special Purpose
Open Software License 2.1 OSL-2.1
  • Superseded
Open Software License, version 1.0 OSL-1.0
  • Superseded
OpenLDAP Public License Version 2.8 OLDAP-2.8
  • Redundant with more popular
OSC License 1.0
  • International
OSET Public License version 2.1 OSET-PL-2.1
  • Special Purpose
PHP License 3.0 PHP-3.0
  • Superseded
PHP License 3.01 PHP-3.01
  • Non-Reusable
Python License, Version 2 PSF-2.0
  • Non-Reusable
RealNetworks Public Source License Version 1.0 RPSL-1.0
  • Non-Reusable
Reciprocal Public License 1.5 RPL-1.5
  • Uncategorized
Reciprocal Public License, version 1.1 RPL-1.1
  • Superseded
SIL OPEN FONT LICENSE OFL-1.1
  • Special Purpose
Simple Public License SimPL-2.0
  • Uncategorized
Sun Industry Standards Source License SISSL
  • Voluntarily retired
Sun Public License, Version 1.0 SPL-1.0
  • Non-Reusable
The 2-Clause BSD License BSD-2-Clause
  • Popular / Strong Community
The 3-Clause BSD License BSD-3-Clause
  • Popular / Strong Community
The CNRI portion of the multi-part Python License CNRI-Python
  • Non-Reusable
The European Union Public License, version 1.1 EUPL-1.1
  • Superseded
The MIT License MIT
  • Popular / Strong Community
The Nethack General Public License NGPL
  • Non-Reusable
The OCLC Research Public License 2.0 License
  • Non-Reusable
The Open Software License 3.0 OSL-3.0
  • Other/Miscellaneous
The PostgreSQL License PostgreSQL
  • Redundant with more popular
The Q Public License Version QPL-1.0
  • Other/Miscellaneous
The Ricoh Source Code Public License RSCPL
  • Non-Reusable
The Sleepycat License Sleepycat
  • Non-Reusable
The Sybase Open Source Licence Watcom-1.0
  • Non-Reusable
The Universal Permissive License Version 1.0 UPL-1.0
  • Other/Miscellaneous
The University of Illinois/NCSA Open Source License NCSA
  • Redundant with more popular
The Unlicense Unlicense
  • Special Purpose
The Vovida Software License v. 1.0 VSL-0.1
  • Non-Reusable
The W3C® Software and Document license W3C-20150513
  • Non-Reusable
The wxWindows Library Licence wxWindows
  • Non-Reusable
The X.Net, Inc. License Xnet
  • Redundant with more popular
The zlib/libpng License Zlib
  • Other/Miscellaneous
UNICODE LICENSE V3
  • Special Purpose
Unicode, Inc. License Agreement – Data Files and Software Unicode-DFS-2015
  • Special Purpose
  • Superseded
    •
    Upstream Compatibility License v1.0 UCL-1.0
    • Special Purpose
    WordNet
    • Non-Reusable
    Zero-Clause BSD 0BSD
    • Other/Miscellaneous
    Zope Public License 2.0 ZPL-2.0
    • Superseded
    Zope Public License 2.1 ZPL-2.1
    • Redundant with more popular





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