Real 3D V1-1.4 - the first versions, worked with them on my A500 - got 030@33 around that time.
Real 3D V2-3.5 - totally reprogrammed, a new program, don't remember if I had A500 first, but got A4000EC/030, then RTG and then 060, and then A4000T/060@75 (last version for Amiga - 1996, 3.5 now free)
Realsoft 3D - (2000) totally reprogrammed the third time, not for Amiga. (I've bought the PC version but never used it).
After this I haven't followed them.