Just saw this list message in the Zaurus Synchronization Repository project on sourceforge:

"Someone has offered to donate an OS X box to the project which will be great when we get it. This will allow us to support OS X and provide the project as a cross-platform solution. The goal will be to eventually make it cross-platform between Linux, Mac OS X, Cygwin, and eventually Windows."

It's open source, so, if you have the time and skills, help this guy out.