Motion Tracker

Hey guys, i need help.
Im looking for good motiontracking software, free.
Im using linux fedora 64bit.
Please help!

Good and free are not two words to use when looking for motion tracking. I use syntheyes and had to pay for it.

Voodoo and Icarus are both free, though there may be some restrictions if you intend using it for commercial work.

Or you can wait and wait for the Blender integrated tracker,
http://code.google.com/p/libmv/updates/list

Very promising but a WIP. Oh and it looks like they would appreciate code help too.