It looks like blender will become open source sometime soon. They need $100,000 to buy the source from the company that made it and went bankrupt. I gave $50 to become a Blender Foundation Member – better than shelling out $200 for trueSpace upgrades, and trueSpace crashes on me left and right with big stuff. They are up to $76,000 in donations. I always liked blender, though it has a sorta whacky interface, everything is there… somewhere. Hopefully the community can make a more intuitive interface to blender’s powerful modeling capabilities.