GPL-Compatible Free Software Licenses
- GNU General Public License (GPL) version 3
- GNU General Public License (GPL) version 2
- GNU Lesser General Public License (LGPL) version 3
- GNU Lesser General Public License (LGPL) version 2.1
- GNU Affero General Public License (AGPL) version 3
- Apache License, Version 2.0
- Clarified Artistic License
- Boost Software License
- Modified BSD license
- CeCILL version 2
- Cryptix General License
- eCos license version 2.0
- Eiffel Forum License, version 2
- EU DataGrid Software License
- Expat License
- FreeBSD license
- Intel Open Source License
- Microsoft Public License (Ms-PL)
- NCSA/University of Illinois Open Source License
- License of Netscape Javascript
- OpenLDAP License, Version 2.7
- License of Python 2.0.1, 2.1.1, and newer versions
- License of Python 1.6a2 and earlier versions
- License of Ruby
- Standard ML of New Jersey Copyright License
- License of Vim, Version 6.1 or later
- W3C Software Notice and License
- X11 License
- XFree86 1.1 License
- License of ZLib
- Zope Public License, versions 2.0 and 2.1
GPL-Incompatible Free Software Licenses
- Affero General Public License version 1
- Academic Free License, all versions through 3.0
- Apache License, Version 1.1
- Apache License, Version 1.0
- Apple Public Source License (APSL), version 2
- Original BSD license
- Common Development and Distribution License (CDDL)
- Common Public License Version 1.0
- Eclipse Public License Version 1.0
- IBM Public License, Version 1.0
- Jabber Open Source License, Version 1.0
- LaTeX Project Public License 1.3a
- LaTeX Project Public License 1.2
- Lucent Public License Version 1.02 (Plan 9 license)
- Microsoft Reciprocal License (Ms-RL)
- Mozilla Public License (MPL)
- Netizen Open Source License (NOSL), Version 1.0
- Netscape Public License (NPL), versions 1.0 and 1.1
- Nokia Open Source License
- Old OpenLDAP License, Version 2.3
- Open Software License, all versions through 3.0
- OpenSSL license
- Phorum License, Version 2.0
- PHP License, Version 3.01
- License of Python 1.6b1 through 2.0 and 2.1
- Q Public License (QPL), Version 1.0
- RealNetworks Public Source License (RPSL), Version 1.0
- Sun Industry Standards Source License 1.0
- Sun Public License
- License of xinetd
- Zend License, Version 2.0
- Zope Public License version 1
Non-Free Software Licenses
- Aladdin Free Public License
- Artistic License 1.0
- AT&T Public License
- eCos Public License, version 1.1
- GPL for Computer Programs of the Public Administration
- Hacktivismo Enhanced-Source Software License Agreement (HESSLA)
- Jahia Community Source License
- Old license of ksh93
- License of Lha
- Microsoft Limited Public License (Ms-LPL)
- Microsoft Limited Reciprocal License (Ms-LRL)
- Microsoft Reference License
- Microsoft's Shared Source CLI, C#, and Jscript License
- Microsoft Windows Embedded CE 6.0 Shared Source License
- NASA Open Source Agreement
- Open Public License
- License of PINE
- Old Plan 9 license
- License of Qmail
- Scilab license
- SGI Free Software License B, version 1.1
- Squeak license
- Sun Community Source License
- Sun Solaris Source Code (Foundation Release) License, Version 1.1
- University of Utah Public License
- YaST License
