Hi,
I see you use a MIT license for Concrete5. You also added the GPL license some years ago after a long thinking.

Why do you don't use Apache2 license ?

MIT : According tohttps://www.gnu.org/licenses/license-list.en.html#X11License... :
This is a fine license for a small program. A larger program usually ought to be copyleft; but if you are set on a lax permissive license for one, we recommend the Apache 2.0 license since it protects users from patent treachery.

Apache 2 :https://www.gnu.org/licenses/license-list.en.html#apache2...
The patent termination provision is a good thing, which is why we recommend the Apache 2.0 license for substantial programs over other lax permissive licenses.

Thanks for your great job,
Max