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Questions tagged [plugins]

The tag has no usage guidance.

3
votes
3answers
87 views

Must a plugin for a GPLv2 work also be GPLv2?

I would like to develop an addon/extension plugin for an existing WordPress plugin, to add some premium features, but the base plugin's source-code is under GPLv2, which makes me doubtful... Is any ...
2
votes
1answer
39 views

WordPress: is extending plugin allowed by GPLv2?

I would like to extend an existing plugin (for example FileBird), to add some features, and later publish and sell it off... But although the plugin's source-code can be simply downloaded from ...
5
votes
1answer
50 views

Can I GPL licence a plugin for a non-free program

I am working on a plugin (in lua) for a proprietary program, but would like to make my plugin open source, and require that anyone making derivative works/plugins also do so. This seems like a good ...
4
votes
2answers
174 views

Closed source plugin for a GPLv2 application

I wrote a library that is indeed a subclass of QTreeView. So I can easily attach it to any Qt application that uses QTreeView. I want to patch a GPL application (GPL_APP) in a way that it searches ...
7
votes
1answer
394 views

Using GPL licensed library over a service for non-GPL softwares

I want to use a GPL v2 licensed library(esper) for commercially distributed non-GPL softwares but I need to make sure non-GPL software not violate GPL license. Can I use this library indirectly using ...
2
votes
1answer
95 views

Are Amx Mod X plugins under GPL v3 license?

The Amx Mod X is: AMX Mod X is a versatile Half-Life metamod plugin which is targetted toward server administration. It has a wide array of scripting capabilities so people can write "plugins", ...
4
votes
2answers
705 views

Can license-incompatible program communicate with GPLv2 program via websocket?

I'm writing a program for automation under a license that is incompatible with GPLv2 (it's dual-licensed: GPLv3/Proprietary). Let's call it my automation program. And there is third party GPLv2 ...
7
votes
1answer
199 views

AGPL and Node.js

Supposed I have written a server in Node.js that I licensed under AGPLv3. Now, if somebody takes my code and modifies it, this is a derivative work. So far, so good. Supposed my server has the ...
5
votes
1answer
67 views

“Primitive” GPL:ed OS and proprietary programs and address spaces

I have read about FSF plugin policy If modules are designed to run linked together in a shared address space, that almost surely means combining them into one program. (Emphasis mine). Now there ...
5
votes
1answer
112 views

Hosting (potentially) non-GPL plugin's

Background: In the audio processing world, most programs to compose and mix music in (collectively called DAW's from now on) are commercial and closed source. These programs can extend their ...
8
votes
1answer
218 views

Can plugins for non-gpl open source software use GPL libraries?

I want to write a plugin for an open-source software which is not GPL, but has a GPL-compatible license (MIT/BSD). I would like the plugin to use a GPL library. Can I do this? My rationale: Since ...
4
votes
3answers
391 views

Usage of GPL program as optional external tool

My software is designed to use third-party external tools if the user wishes to do so. Some users would like to use GPL-covered binaries as external tools (i.e. they tell my software "use this dll to ...
2
votes
2answers
46 views

Can I use Event Organiser plugin in a commercial plugin for WordPress?

Can I use this plugin in a commercial plugin for WordPress?
5
votes
2answers
189 views

Copyleft license that allows usage in plugins of closed-source host applications

I wrote a library that I want to release under the GPL to prevent it from being incorporated in closed source software. I do not want people to use this library in their closed source commercial ...
12
votes
2answers
3k views

Can plugins for closed source software use GPL'd libraries?

I use closed-source scientific software for my work. I also use GPL licensed tools and libraries. It would save me a lot of time to be able to call a GPL library directly from the closed-source ...
16
votes
4answers
278 views

Does a host application's license apply to plug-ins written for it?

This was prompted by another question which reminded of a past experience. Consider the following: An open-source project supports a plug-in architecture The project is released under a copyleft ...