Open-source license

OSI Approved Licenses

Software in the public domain (that is, with no copyright license at all), meets those criteria as long as all source code is made available, and is therefore recognized by the OSI and entitled to use their service mark. In addition, OSI has approved the following licenses as of 2003:

• Academic Free License
• Apache Software License
• Apple Public Source License
• Artistic License
• Common Public License
• Eiffel Forum License
• BSD License
• GNU General Public License (GPL)
• GNU Lesser General Public License (LGPL)
• Historical Permission Notice and Disclaimer
• IBM Public License
• Intel Open Source License
• Jabber Open Source License
• MIT License
• MITRE Collaborative Virtual Workspace License (CVW License)
• Motosoto License
• Mozilla Public License 1.0 (MPL)
• Mozilla Public License 1.1 (MPL 1.1)
• NetHack General Public License
• Nokia Open Source License
• Open Software License
• Open Group Test Suite License
• Python license
• Python Software Foundation License
• Q Public License (QPL)
• Ricoh Source Code Public License
• Sleepycat License
• Sun Industry Standards Source License (SISSL)
• Sun Public License (SPL)
• Vovida Software License v. 1.0
• W3C License
• X.Net License
• zlib-libpng license
• Zope Public License
  

  Non-OSI source licenses

  
  Licenses which are source-available but not OSI-Certified include:

• HESSLA
• Solaris
• PGP

  Comparisons

Likewise, the Debian project has its own criteria, the Debian Free Software Guidelines, which in many ways was a precursor to the Open Source Definition.

See also