There are some other Mac options, but I don't remember the names. If you go to the Apple support forum on the Apple website and search there, you should be able to find the names. I don't work with Macs, that is why I don't remember, but that is where I have read it a number of times.
You lose your iTunes library, or forget to back it up on the old one? You should be able to just transfer from the old computer.
I found one, Touchcopy supports the Mac platform. Also, take a look at this discussion thread for further information.