I have extended Edisyn's Prophet '08 open source patch editor to also support the Tetra, Mopho, Mopho Keyboard and SE, and Mopho x4. However I do not have these machines and so cannot test them.
Excited yet? I could use your assistance. If you own any of these units and are interested in testing them for me, please contact me at sean@cs.gmu.edu
Thank you!
[Edisyn is an open source patch editor facility with a lot of features. My extensions are not yet on the official release.]