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License Approval Process
License Information

*Academic Free License
*Adaptive Public License
*Apache Software License
*Apache License, 2.0
*Apple Public Source License
*Artistic license
*Attribution Assurance Licenses
*New BSD license
*Computer Associates Trusted Open Source License 1.1
*Common Development and Distribution License
*Common Public License 1.0
*CUA Office Public License Version 1.0
*EU DataGrid Software License
*Eclipse Public License
*Educational Community License
*Eiffel Forum License
*Eiffel Forum License V2.0
*Entessa Public License
*Fair License
*Frameworx License
*GNU General Public License (GPL)
*GNU Library or "Lesser" General Public License (LGPL)
*Lucent Public License (Plan9)
*Lucent Public License Version 1.02
*IBM Public License
*Intel Open Source License
*Historical Permission Notice and Disclaimer
*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)
*NASA Open Source Agreement 1.3
*Naumen Public License
*Nethack General Public License
*Nokia Open Source License
* OCLC Research Public License 2.0
*Open Group Test Suite License
*Open Software License
*PHP License
*Python license (CNRI Python License)
*Python Software Foundation License
*Qt Public License (QPL)
*RealNetworks Public Source License V1.0
*Reciprocal Public License
*Ricoh Source Code Public License
*Sleepycat License
*Sun Industry Standards Source License (SISSL)
*Sun Public License
*Sybase Open Watcom Public License 1.0
*University of Illinois/NCSA Open Source License
*Vovida Software License v. 1.0
*W3C License
*wxWindows Library License
*X.Net License
*Zope Public License
*zlib/libpng license

The Approved Licenses

For your convenience, we have collected here copies of the licenses approved by OSI. If you distribute your software under one of these licenses, you are permitted to say that your software is "OSI Certified Open Source Software."

The "classic" licenses, GPL, LGPL, BSD, and MIT, were the most commonly used for open-source software before the Mozilla release in early 1998. The Mozilla Public License has since become widely used. Many other licenses have been submitted for review and approval by OSI. As you can see, the list of approved licenses is growing.

If you can, use one of the already-approved licenses for distributing your software. But be sure that you read and understand the license terms completely. We encourage you to select a license that is consistent with your business model. And consult with your own attorney, because OSI does not provide legal advice.

License Versions and Translations

The official versions of these licenses are the ones published on the OSI website. Translations of these licenses into other languages may be available but those translations are not official or legally binding.

Email concerning licensing

OSI has also established a mailing list to review licenses submitted to license-approval at opensource.org. To subscribe, send mail to license-discuss-subscribe at opensource.org. Unsubscribes go to license-discuss-unsubscribe at opensource.org. The usual -request address works as well. This list is archived here.

There is also an "announcement list". To receive notice of OSI actions, e.g. approving licenses, position papers, etc. send an email to announcements-subscribe at opensource.org. To subscribe a group address send a msg like so: announcements-subscribe-news=news.com at opensource.org Subscribing to the announcements list is highly recommended.


Copyright © 2005 by the Open Source Initiative
Technical questions about the website go to Steve M.: steve at fooworks.com / Policy questions about open source go to the Board of Directors.

The contents of this website are licensed under the Open Software License 2.1 or Academic Free License 2.1

OSI is a registered non-profit with 501(c)(3) status. Contact our Board for further donation information.

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