How Many Licenses Is Too Many

Tuesday, January 1, 1980

More than 90, and counting. See original list and descriptions

  • Free Software Licenses (GPL-Compatible)
    1. GNU General Public License, or GNU GPL for short.
    2. GNU Lesser General Public License, or GNU LGPL for short.
    3. License of Guile
    4. License of the run-time units of the GNU Ada compiler
    5. X11 License
    6. Expat License.
    7. Public Domain
    8. CeCILL version 2
    9. Cryptix General License
    10. Modified BSD license
    11. License of ZLib
    12. License of the iMatix Standard Function Library
    13. W3C Software Notice and License
    14. Berkeley Database License (aka the Sleepycat Software Product License)
    15. OpenLDAP License, Version 2.7
    16. License of Python 1.6a2 and earlier versions
    17. License of Python 2.0.1, 2.1.1, and newer versions
    18. License of Perl
    19. Clarified Artistic License
    20. Zope Public License version 2.0
    21. License of Netscape Javascript
    22. eCos license version 2.0
    23. Eiffel Forum License, version 2
    24. License of Vim, Version 6.1 or later
    25. Boost Software License
    26. EU DataGrid Software License
    27. The license of Ruby
  • Free Software Licenses (GPL-Incompatible)
    1. XFree86 1.1 License
    2. Affero General Public License
    3. Original BSD license
    4. OpenSSL license
    5. Academic Free License, version 1.1.
    6. Academic Free License, version 2.1.
    7. Open Software License, version 1.0
    8. Apache License, Version 1.0
    9. Apache License, Version 1.1
    10. Apache Software License, version 2.0
    11. Zope Public License version 1
    12. License of xinetd
    13. License of Python 1.6b1 and later versions, through 2.0 and 2.1
    14. Old OpenLDAP License, Version 2.3
    15. IBM Public License, Version 1.0
    16. Common Public License Version 1.0
    17. Eclipse Public License Version 1.0
    18. Phorum License, Version 2.0
    19. LaTeX Project Public License 1.2
    20. Mozilla Public License (MPL)
    21. Netizen Open Source License (NOSL), Version 1.0
    22. Interbase Public License, Version 1.0
    23. Sun Public License
    24. Nokia Open Source License
    25. Netscape Public License (NPL)
    26. Jabber Open Source License, Version 1.0
    27. Sun Industry Standards Source License 1.0
    28. Q Public License (QPL), Version 1.0
    29. PHP License, Version 3.0
    30. Zend License, Version 2.0
    31. Lucent Public License Version 1.02 (Plan 9 license)
    32. Apple Public Source License (APSL), version 2
  • Non-Free Software Licenses
    1. (Original) Artistic License
    2. Apple Public Source License (APSL), version 1.x
    3. Reciprocal Public License
    4. SGI Free Software License B, version 1.1
    5. Sun Community Source License
    6. Old Plan 9 License
    7. Open Public License
    8. University of Utah Public License
    9. eCos Public License, version 1.1
    10. Sun Solaris Source Code (Foundation Release) License, Version 1.1
    11. YaST License
    12. Aladdin Free Public License
    13. Scilab license
    14. AT&T Public License
    15. Jahia Community Source License
    16. License of ksh93
    17. License of Qmail
    18. The license of PINE
    19. Microsoft's Shared Source CLI, C#, And Jscript License
    20. Hacktivismo Enhanced-Source Software License Agreement (HESSLA)
    21. The Squeak license
  • Free Licenses For Documentation
    1. GNU Free Documentation License
    2. FreeBSD Documentation License
    3. Apple's Common Documentation License, Version 1.0
    4. Open Publication License, Version 1.0
  • Non-Free Documentation Licenses
    1. Open Content License, Version 1.0
    2. Open Directory License (aka dmoz.org License)
  • Licenses For Works Besides Software and Documentation
    1. GNU General Public License
    2. GNU Free Documentation License
    3. Design Science License
    4. Creative Commons Attribution-Sharealike 2.0 license
    5. Creative Commons Attribution 2.0 license
  • Licenses For Fonts
    1. SIL Open Font License 1.0
    2. Arphic Public License
    3. GNU General Public License