http://www.k-3d.org/wiki/Main_Page (http://www.k-3d.org/wiki/Main_Page)
'Zit good?
For render modeling, looks so. For game modeling, doesn't look so.
First I've heard of it. I think I'll give it a try the next time I feel like modeling.
Would probably be ok if you wanted to model high polygon models, and use them to create textures. That said, the 'optimize' tool in 3DS max is pretty neat :P