Site Index

Board of Directors

The Case for Open Source: For Business

The Case for Open Source: For Customers

The Case for Open Source: For Hackers

Case Studies and Press Coverage

Certification Mark and Program

The Open Source Awards

Frequently-Asked Questions

Halloween Document I: Open Source Software–A (New?) Development Methodology

Halloween Document II: Linux OS Competitive Analysis: The Next Java VM?

Halloween Document III: Microsoft's reaction on the "Halloween Memorandum" (sic)

Halloween Document IV: When Software Things Were Rotten

Halloween Document V: The FUD Begins!

Halloween Document VI: The Fatal Anniversary

Halloween Document VII: Survey Says!

Halloween Document VIII: Doing the Damage-Control Dance

Halloween Documents Frequently-Asked Questions

Halloween Documents Links

Peru answers Microsoft's FUD

The MITRE report on A Business Case Study of Open Source Software.

History of the OSI

Jobs for Hackers: Yes, You Can Eat Open Source

Licenses:

• The GNU General Public License (GPL)
• The GNU Library or "Lesser" General Public License (LGPL)
• The BSD license
• The MIT license
• The Artistic license
• The Mozilla Public License v. 1.0 (MPL)
• The Qt Public License (QPL)
• The IBM Public License
• The MITRE Collaborative Virtual Workspace License (CVW License)
• The Ricoh Source Code Public License
• The Python license (CNRI Python License)
• The Python Software Foundation License
• The Apache Software License
• The Vovida Software License v. 1.0
• The Sun Industry Standards Source License (SISSL)
• The Intel Open Source License
• The Mozilla Public License 1.1 (MPL 1.1)
• The Jabber Open Source License
• The Nokia Open Source License (NOKOS License) Version 1.0a
• The Sleepycat License
• The Nethack License
• The Common Public License
• The Apple Public Source License
• The X.Net License
• The Sun Public License
• The Eiffel Forums License V.1
• The W3C License
• The Motosoto License
• The Open Group Test Suite License
• The Zope Public License
• The zlib/libpng License
• The Academic Free License
• The Attribution Assurance License
• The Open Software License
• The OCLC Research Public License 2.0
• The wxWindows Library License
• The Sybase Open Watcom Public License 1.0
• The Eiffel Forum License V2.0
• The Naumen Public License
• The Historical Permission Notice and Disclaimer
• The RealNetworks Public Source License V1.0
• The Reciprocal Public License
• The University of Illinois/NCSA Open Source License
• The Entessa Public License
• The Plan 9 Open Source License
• The PHP License (v3.0)
• The Frameworx License
• The Apache License, Version 2.0
• The CUA Office Public License Version 1.0
• The EU DataGrid Software License
• The Fair License
• The Lucent Public License Version 1.02
• The Eclipse Public License
• The Nasa Open Source Agreement

Open Source Definition (with annotations)

Open Source Definition (without annotations)

Site History/Change Log

Press Releases:

• 22 November 1998: OSI Launch Announcement
• 25 November 1998: An Open Letter to AOL
• 16 March 1999: OS Clarifies The Status Of The APSL
• 16 June 1999: Announcement of "OSI Certified" Open Source Mark
• 09 October 2001: OSI letter of comment on W3C's proposed RAND policy

Products Conforming to the Open Source Definition

Resource Links and Sponsoring Organizations

Software Secrets: Do They Help or Hurt?

Why "Free Software" Is Too Ambiguous

Shared Source: A Dangerous Virus