Comment Re:There is an actual 3D cad for Linux out there.. (Score 1) 100
UG/NX is also for Linux and Mac. The Linux version is only said to be supported on Suse Linux, but I think with some tweaking you should manage to run it on any Linux flavor. All though the Mac and Linux versions doesn't look as polished as the Windows version, both Mac and Linux versions are full featured UG/NX software.
NX on Wikipedia
Also ProE seems to have a UNIX version, according to wikipedia.