Forum OpenACS Q&A: Response to GNU Public License and Mozilla Public License

I'll add my "me too" here as well. As long as the core remains
GPL'ed, I think it would be healthy to allow closed-source
development of modules (or, for that matter, development of
modules that are released under a non-GPL Open Source
license). While I, too, would prefer that new modules developed
by third parties be released under the GPL, I think it best for the
growth of the platform to allow vendors a choice.