Can a non-free plugin be bundled with a free application?

Question

open source

There is some GPL application that allows you to dynamically link plugins.
Is it possible to distribute a non-free plugin? Sell ​​it?

Also interested in the possibility of interaction with other GPL plugins.

UPD :
To clarify, the application itself is in Java.
The application (GPL) initiates the download of a .jar file with the plugin, and pulls its functions (via the application's API).

Answer 1

> There is some GPL application that allows you to dynamically link plugins.
Is it possible to distribute a non-free plugin? Sell ​​it?
The question here is exactly how the application should interact with the plugin. If we are talking about loading a dynamic library (.so, .dll), then the licenses of the GPL family prohibit such linking.
If there is no direct interaction (using various IPC mechanisms or running an external program with further parsing of its standard output), then this can be done (but is it worth it?).
More details here:
www.gnu.org/licenses/gpl-faq.html#GPLAndPlugins

Answer 2

If the license allows, why not. On codecanyon.net, for example, you can buy an extended license for a pligan, usually allowing you to distribute this plugin as part of your development.