Re: [Gimp-user] Are Plug-In Covered under the license as well?

["Joao S. O. Bueno" <gwidion mpc com br>]

On 9 February 2015 at 17:00, Kevin Redona <kiloreconzromeo yahoo com> wrote:
>  Hello all.  Are plug-ins for GIMP free to use commercially as well (example: Chroma Key)?  I would 
> appreciate your response.


In fact,  the "official" plug-ins are all those that are shipped with
GIMP source code - and only those.
These official plug-ins are under GPLv3 or later, just as GIMP itself.

Everything else is not covered - and each plug-in might have its own license.
I remember several years ago about a discussion on the developer list
about that there should bean explicit exemption
of the GPL for third party plug-ins (since, for example, there was
even a plug-in that allowed use of photshop binary plug-ins at the
time). - and the result of that discussion it is there in the
"LICENSE" file that ships with the source code
(pasted bellow).


Regards,

   js
  -><-


GIMP's "LICENSE" file:

* The GIMP application core, and other portions of the official GIMP
  distribution not explicitly licensed otherwise, are licensed under
  the GNU GENERAL PUBLIC LICENSE -- see the 'COPYING' file in this
  directory for details.

[ The below explicit exemption, we hope, clears up the GIMP
  developers' position concerning an ambiguity with the GNU General
  Public License concerning what constitutes a 'mere aggregation'
  versus a combined or derived work.  The intention is to make it
  clear that arbitrarily-licensed programs such as GIMP plug-ins do
  not automatically assume the GNU General Public License (GPL)
  themselves simply because of their invokation of (or by) procedures
  implemented in GPL-licensed code, via libgimp or a similar interface
  to methods provided by the pdb: ]

* If you create a program which invokes (or provides) methods within
  (or for) the GPL GIMP application core through the medium of libgimp
  or another implementation of the 'procedural database' (pdb) serial
  protocol, then the GIMP developers' position is that this is a 'mere
  aggregation' of the program invoking the method and the program
  implementing the method as per section 2 of the GNU General Public
  License.

* 'libgimp' and the other GIMP libraries are licensed under the
  GNU LESSER GENERAL PUBLIC LICENSE -- see the 'COPYING' file in the
  libgimp directory for details.





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