Hey, this might be relevant to your interests.
I've been working on and off on a prototype engine, for a game I'm going to be making.
I'm using OpenGL, and AssImp for rendering and model loading etc, along with Bullet for physics, also PortAudio and libvorbis for sound. Few other things here and there.
The important thing is, I chose the libraries I'm using very carefully, they're all multi-platform (Windows, Linux, Mac OS X), and all come with liberal licenses. MIT, BSD, etc..
Basically, I'll be able to legally use all this stuff in a commercial application, even statically linked. (few strings attached, but nothing major, mainly just attribution, which I'm okay with
)
This is a pretty old screenshot (Oct, 2011), I've recently finished reading
The Orange Book and am rewriting the renderer, so I'm not able to show off it's current state.
A lot has improved, but essentially it's still a prototype, I'll be re-writing a lot of it, but keeping the parts I like.
Anyway, add me on
Steam if you have any questions.
-Minic