Apple - Mac OS X Leopard - Features - iSync Devices
That's what I know - Pocket PCs needs third party software (not free), and only three Samsung models are listed.
Should I doubt Apple's own feature list? Should I think they have missed something they can brag about?
MS doesn't NEED to write their own set of drivers, manufacturers do it for them, and manufacturers are too lazy to write Mac versions of their software.
iSink is Mac's own program, they write it themselves and update it once a year. New phones/PDAs are released every day.