Smartphone or PDA users who use Macs usually rely on Missing Sync when backing up the data on their gadget to their computer. That's because Missing Sync makes sure contacts are copied to Address Book, appointments to iCal, photos to iPhoto, and makes backing up mobile info a lot more convenient.

The good news is that Mac windows mobile 6 users (a borderline oxymoron, if I ever heard one) now enjoy support from the newest version of Missing Sync for Windows Mobile (4.0). Read the supported devices page for more details.

With this update, makers Mark/Space ensure their relevancy for Mac smartphone or PDA users. Which makes me wonder why Apple hasn't improved its bundled iSync app. Could it have something to do with the iPhone?