[Reinmar]

Thanks for such positive feedback :)

Yes, the "Free for Open Source" initiative is up and running. For now, we didn't promote it a lot because we wanted to learn how it works, but from what I know, the custom license that we proposed is already used by a couple of projects.

Based on the feedback that we got so far, we're right now working on a simplified version of this license. Its initial version still had some restrictions which didn't work for Apache2/MIT projects with a commercial branch. Plus, it was simply too long for normal people :). We're removing these limitations. Once it will be polished, we will talk about it more officially on ckeditor.com.

[bojanz]

That's great to hear. Keep up the good work!