[TYPO3] Extensions and GPL

Martin Kutschker Martin.Kutschker at n0spam-blackbox.net
Fri Sep 8 10:09:53 CEST 2006

Peter Russ schrieb:
> Nagita Karunaratne schrieb:
>> On 9/8/06, Peter Russ <peter.russ at 4many.net> wrote:
>>> Bjoern Kraus schrieb:
>>> > Hello!
>>> >
>>> > Starting developing our own extension we wondered whether a new
>>> > extension for TYPO3 has to be automatically licensed under the GPL. 
>>> IMHO
>>> > as long as we don't change TYPO3's or any extension's code inside it's
>>> > files, every extension that USES the TYPO3-Framework (includes 
>>> hooks and
>>> > xclasses) can be licensed in any way we want. Is that right?
>>> Extension HAS to be GPL, but...
>> Are you absolutely sure?
> As you know there are always exceptions.You can select any 
> GPL-compatible one ;-)
> Kidding.
> Frankly speaking.
> If you "include" a non-GPL STANDALONE application then you free to 
> choose the licencse. But you should check the archieve: there are tons 
> of threads that already discussed that in detail.


My opinion is that as every TYPO3 extension has to use the TYPO3 API and is 
therefore a derived work must use a GPL-compatible linence.

Additionally it has to GPLed if you want to share the extension via TER, 
but that's just policy.


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