Hi! I'm doing some research on open source / free (GPL) graphics engines and/or SDKs. Does anybody here have any experiences or opinions on those, for example OGRE, Irrlicht, CrystalSpace, Genesis3D, Coin3D etc. Which of those do you see as a viable alternative for game developers? Are there other options? What about 2d graphics? Any help would be appreciated. - AK (from Finland)

Are you looking for rendering engines only or do you want to include game engines into the list?

Anyway, for rendering I like OGRE a lot. Excellent feature set, API independent, very extensible, very creative and helpful community, clean code design, excellent project lead. What more can you ask for? Combining it with other engines/SDKs into frameworks or engines or games is pretty easy to achieve. Several projects demonstrate this.

-codeandroid