Re-licensing examples License compatibility
an example of project re-licensed license incompatibility reasons mozilla project , firefox browser. source code of netscape s communicator 4.0 browser released in 1998 under netscape public license/mozilla public license criticised free software foundation (fsf) , osi being incompatible gnu general public license (gpl). around 2001 time warner, exercising rights under netscape public license, , @ request of mozilla foundation, re-licensed code in mozilla under netscape public license (including code other contributors) mpl 1.1/gpl 2.0/lgpl 2.1 tri-license, achieving gpl-compatibility.
the vorbis library licensed lgpl, in 2001, endorsement of richard stallman, license changed less restrictive bsd license, accelerate library s adoption.
the vlc project has complicated license history due license incompatibility, , in 2007 project decided, license compatibility, not upgrade released gplv3. in october 2011, after vlc had been removed apple app store @ start of 2011, vlc project re-licensed vlc library, gplv2 lgplv2, achieve better compatibility. in july 2013, software re-licensed under mozilla public license, vlc application resubmitted ios app store.
the free software foundation s gnu free documentation license version 1.2 not compatible used creative commons attribution-sharealike license, problem wikipedia, instance. therefore, @ request of wikimedia foundation, fsf added time-limited section, version 1.3 of gfdl, allowed specific types of websites using gfdl additionally offer work under cc by-sa license. following this, in june 2009, wikimedia foundation migrated projects (wikipedia, etc.) dual licensing creative commons attribution-sharealike main license, in addition used gfdl, have improved license compatibility greater free content ecosystem.
another interesting case google s re-licensing of gplv2-licensed linux kernel header files bsd license android library bionic. google claimed header files clean of copyright-able work, reducing them non-copyrightable facts , , not covered gpl. interpretation challenged raymond nimmer, law professor @ university of houston law center.
in 2014, freecad project changed license gpl lgplv2, due gplv3/gplv2 incompatibilities. in 2014, gang garrison 2 re-licensed gplv3 mpl improved library compatibility.
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