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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Apple Public Source License 2.0 APSL-2.0
Computer Associates Trusted Open Source License 1.1 CATOSL-1.1
eCos License version 2.0 eCos-2.0
Entessa Public License Version. 1.0 Entessa
EU DataGrid Software License EUDatagrid
Frameworx License 1.0 Frameworx-1.0
IBM Public License Version 1.0 IPL-1.0
LaTeX Project Public License, Version 1.3c LPPL-1.3c
Motosoto Open Source License Motosoto
Multics License Multics
NAUMEN Public License Naumen
Nokia Open Source License Version 1.0a NOKIA
PHP License 3.01 PHP-3.01
Python License, Version 2 PSF-2.0
RealNetworks Public Source License Version 1.0 RPSL-1.0
Sun Public License, Version 1.0 SPL-1.0
The CNRI portion of the multi-part Python License CNRI-Python
The Nethack General Public License NGPL
The OCLC Research Public License 2.0 License
The Ricoh Source Code Public License RSCPL
The Sleepycat License Sleepycat
The Sybase Open Source Licence Watcom-1.0
The Vovida Software License v. 1.0 VSL-0.1
The wxWindows Library Licence wxWindows