You missed my point. the license for Unity3d is incompatible with distributing source code on github, or licensing it with any open source license. You can't do

You missed my point. the license for Unity3d is incompatible with distributing source code on github, or licensing it with any open source license. You can't do it. As for librocket, I was confused about that, so I had a look and I'm not sure that's what they are using for anything more than the UI. The framework they are using is SFML.