[TYPO3] Fee for GPL and
Xavier Perseguers
typo3 at perseguers.ch
Mon Aug 11 09:46:23 CEST 2008
Hi all,
AFAIU, extensions that use TYPO3 framework have to use the GNU GPL too.
Is that true? That means that they are automatically open source. I know
there will be changes for TYPO3 5.0 but for now I speak of the 4.x
branch ;-)
According to the FSF (http://www.gnu.org/philosophy/selling.html), it is
allowed and encouraged to distribute free software for a fee. OK! But
then the person who paid the fee is allowed to modify (or not) and
redistribute it freely:
"Specifically, it means that a user is free to run the program, change
the program, and redistribute the program with or without changes."
Does it mean that I may ask for a fee, and I am encouraged to but once I
"sold" it, my customer is authorized to give it away? I could imagine a
few people are interested in the code, they buy it together and in the
end, I only have 1 fee instead of many. Did I missed something or is it
so? Just to know :-)
Now, last point. What about a product such as Zend Guard
(http://www.zend.com/en/products/guard/) that may encrypt the code or
require a license to be renewed each year or that limit the ability to
run the software on a single server, ... and the use of the GNU GPL. Is
it compatible in some way? Which one?
Thanks
--
Xavier Perseguers
http://xavier.perseguers.ch/en/tutorials/typo3.html
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