SyncMate allows you to sync your contacts and calendars with many devices simultaneously and even with your Google account (in 2 ways, unlike iSync). BTW, since version 2.0 you can backup your important data online. This will also help you to Synchronize all your important information and keep your notes, documents, files and contacts well-organized.
Additionally to sync features, SyncMate Free Edition provides you with opportunity to read your SMS right from Mac OS X computer, share Internet between Mac and Windows Mobile devices and visually analyze detailed information of the Windows Mobile devices connected (battery state or memory usage).
SyncMate installation is very easy. There is no need to unlock device in order to install SyncMate. Mac can be connected to Windows Mobile device via USB or Wi-Fi, Mac to Nokia connection is available via Bluetooth, and you can sync your Mac with another Mac via Ethernet.
SyncMate is compatible with Mac OS X platform (Mac OS X 10.4 and higher, Mac OS X 10.5). Device compatibility are Windows Mobile Pocket 5, Windows Mobile Smartphone 5; Windows Mobile 6 Standard, Windows Mobile 6 Classic and Windows Mobile 6 Professional; Windows Mobile 6.1, Windows Mobile 6.5; Nokia S40 devices.