A 64-bit Cheetah
The developer of Cheetah 3D is well on its way to a true 64-bit version of Cheetah 3D. The FBX SD has been updated to the latest v2010.2 version and the old QuickTime code has been replaced with the new QTKit. The upcoming 64-bit version will be free for all 5.x users.
To learn more about Cheetah 3D visit them online here.