Questions tagged [plugins]

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2
votes
1answer
35 views

Can I sell closed source plugins that interface with a GPL v2 software which is open sourced? [duplicate]

Basically, I have an idea for some software based on an Open Sourced application. If I was to build an application based off of that, and sell my plugins, would this be a breach of terms? This is the ...
5
votes
1answer
78 views

GPL Application linked to a LGPL library loading proprietary-plugins

This is a bit similar to what asked in this question, unless that here the case is that the application only directly loads LGPL code, and this one then may dlopen a proprietary lib, so: GPL Program ...
0
votes
1answer
40 views

WordPress: only built plugin GPL licensed

We are developing WordPress plugins. As WordPress itself is GPL licensed we must publish our plugin as GPL, too. Our complete plugin development environment is built on top of a lot of devDependencies ...
1
vote
2answers
111 views

Can I use GPL libraries in plugins without infecting a host commercial application?

I'm quite confused about what are the obligations of GPL libraries in the context of plugin based software. Let's say I want to distribute & sell a plugin based app as closed source providing to ...
3
votes
3answers
129 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
67 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
135 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
335 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 ...
6
votes
1answer
721 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
148 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
720 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
2answers
273 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
87 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 ...
4
votes
1answer
144 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
249 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
503 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
215 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
4k 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
347 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 ...