Using Custom GNU / GPL Web Applications as a Commercial Subscription Model

Question

If I take a web application that is covered by the GNU / GPL and modifies it myself, then use it as a business model of a monthly fee, for example. the user pays for the maintenance and web content, and not for the software itself, so I do not distribute the software itself, is my user version of the software subject to the GNU / GPL terms for redistributing the source and the same terms or not?

To give more details, let me take for example. GNU / GPL licensed web game. If I take it and change it, add content and user-friendly gameplay, etc., and then place the game with a monthly fee or free, but with a purchase model in the game. In this case, the user will pay for the service itself for using the online service / server and gameplay / content. Will my custom game violate the GNU / GPL license model of the original source and will I need to release the modified source under the same conditions?

As for the subscription-based business model for paying for services, not the software itself, I know that it does not violate the GNU / GPL model, which is quite possible if someone does not contradict me? Thus, I'm more interested in the source code, freeing up some of the problem.

Answer 1

Commercial use does not violate the GPL. In addition, web services are not required to provide any derivative of the GPL or LGPL code; Only derivatives of the AGPL code used in web services should be exempted.

Answer 2

Take a look at each type of content:

Flash, as mentioned: it looks like the binary will be distributed, so your modified source should be released under the GPL.

Javascript: , GPL. , - , , , -, GPL .

php: ,

javascript: ( , , ) ,

html css: , GPL, " " .

, AGPL / , PHP , , ( " ", a-service ").

Answer 3

, , , , , .

. , , , , - , () ( ) .

.

Why not spend extra effort writing your OWN game and licensing it as you want? I understand that this is more work, but the items outlined in my second paragraph then become much less significant and you do not collect black spots on your karma.