Yahoo! Public License

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Yahoo! Public License
FSF approved Yes
GPL compatible No

Yahoo! Public License is a free software license by Yahoo!. It is used among others by old versions of the collaborative software Zimbra.[1][2] It is approved by the Free Software Foundation as a free (however GPL-incompatible) software license.[3]


  1. ^ "Yahoo! Public License, Version 1.1 (YPL)". Zimbra. Retrieved 2010-08-19. 
  2. ^ "Zimbra Licensing". Zimbra. Retrieved 2010-10-09. 
  3. ^ "Various Licenses and Comments about Them". Free Software Foundation. 2009-07-17. Retrieved 2010-08-19.