If they are "one program", a distinction which seems clear but ends up being a judgement call, then no, you can not do this. If they are separate programs, the

If they are "one program", a distinction which seems clear but ends up being a judgement call, then no, you can not do this. If they are separate programs, then yes, you can do this. Plugins seem to be okay as well, but are a gray area. But your app's core functionality must be GPL'd or GPL-able or else you could be in trouble when you distribute it.