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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International
Non-Reusable
Other/Miscellaneous
Popular / Strong Community
Redundant with more popular
Special Purpose
Superseded
Uncategorized
Voluntarily retired
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License Name
SPDX ID
Category
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Superseded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Superseded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Superseded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Superseded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Superseded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Superseded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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