Licenses by Name

The following licenses have been approved by the OSI. The parenthesized expression following a license name is its SPDX short identifier (if one exists).

• 2-clause BSD License (BSD-2-Clause)
• 3-clause BSD License (BSD-3-Clause)
• Academic Free License 3.0 (AFL-3.0)
• Adaptive Public License (APL-1.0)
• Apache License 2.0 (Apache-2.0)
• Apple Public Source License (APSL-2.0)
• Artistic License 2.0 (Artistic-2.0)
• Attribution Assurance License (AAL)
• Boost Software License (BSL-1.0)
• BSD License: See 3-clause BSD License and 2-clause BSD License
• BSD+Patent (BSD-2-Clause-Patent)
• CeCILL License 2.1 (CECILL-2.1)
• Computer Associates Trusted Open Source License 1.1 (CATOSL-1.1)
• Common Development and Distribution License 1.0 (CDDL-1.0)
• Common Public Attribution License 1.0 (CPAL-1.0)
• CUA Office Public License Version 1.0 (CUA-OPL-1.0)
• EU DataGrid Software License (EUDatagrid)
• Eclipse Public License 1.0 (EPL-1.0)
• eCos License version 2.0
• Educational Community License, Version 2.0 (ECL-2.0)
• Eiffel Forum License V2.0 (EFL-2.0)
• Entessa Public License (Entessa)
• European Union Public License, Version 1.1 (EUPL-1.1) (links to every language's version on their site)
• Fair License (Fair)
• Frameworx License (Frameworx-1.0)
• Free Public License 1.0.0 (0BSD)
• GNU Affero General Public License version 3 (AGPL-3.0)
• GNU General Public License version 2 (GPL-2.0)
• GNU General Public License version 3 (GPL-3.0)
• GNU Lesser General Public License version 2.1 (LGPL-2.1)
• GNU Lesser General Public License version 3 (LGPL-3.0)
• Historical Permission Notice and Disclaimer (HPND)
• IBM Public License 1.0 (IPL-1.0)
• IPA Font License (IPA)
• ISC License (ISC)
• LaTeX Project Public License 1.3c (LPPL-1.3c)
• 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)
• MirOS Licence (MirOS)
• Microsoft Public License (MS-PL)
• Microsoft Reciprocal License (MS-RL)
• MIT License (MIT)
• Motosoto License (Motosoto)
• Mozilla Public License 1.0 (MPL-1.0)
• Mozilla Public License 1.1 (MPL-1.1)
• Mozilla Public License 2.0 (MPL-2.0)
• Multics License (Multics)
• NASA Open Source Agreement 1.3 (NASA-1.3)
• NTP License (NTP)
• Naumen Public License (Naumen)
• Nethack General Public License (NGPL)
• Nokia Open Source License (Nokia)
• Non-Profit Open Software License 3.0 (NPOSL-3.0)
• OCLC Research Public License 2.0 (OCLC-2.0)
• Open Group Test Suite License (OGTSL)
• Open Software License 3.0 (OSL-3.0)
• OSET Public License version 2.1
• PHP License 3.0 (PHP-3.0)
• The PostgreSQL License (PostgreSQL)
• Python License (Python-2.0) (overall Python license)
• CNRI Python license (CNRI-Python) (CNRI portion of Python License)
• Q Public License (QPL-1.0)
• RealNetworks Public Source License V1.0 (RPSL-1.0)
• Reciprocal Public License 1.5 (RPL-1.5)
• Ricoh Source Code Public License (RSCPL)
• SIL Open Font License 1.1 (OFL-1.1)
• Simple Public License 2.0 (SimPL-2.0)
• Sleepycat License (Sleepycat)
• Sun Public License 1.0 (SPL-1.0)
• Sybase Open Watcom Public License 1.0 (Watcom-1.0)
• University of Illinois/NCSA Open Source License (NCSA)
• Universal Permissive License (UPL)
• Upstream Compatibility License v1.0
• Vovida Software License v. 1.0 (VSL-1.0)
• W3C License (W3C)
• wxWindows Library License (WXwindows)
• X.Net License (Xnet)
• Zero Clause BSD License (0BSD): see Free Public License 1.0.0
• Zope Public License 2.0 (ZPL-2.0)
• zlib/libpng license (Zlib)

You can also view a list of open source licenses grouped by category, and licenses which have been superseded or retired.