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ISync

iSync is a software application first released by Apple Inc. on Jan 2, 2003. Apple licensed the core technology from fusionOne. It ran only under Mac OS X and was used to synchronize contact and calendar data from Address Book and iCal with many non-Apple SyncML-enabled mobile phones via a Bluetooth or USB connection. Support for many (pre-October 2007) devices was built-in, with newer devices being supported via manufacturer and third-party iSync Plugins. Support for Palm OS organizers and compatible smartphones was removed with the release of iSync 3.1 and Mac OS X 10.6 Snow Leopard. BlackBerry OS, Palm OS, and Windows Mobile ( Pocket PC) devices could not be used with iSync, but were supported by third-party applications. Before the release of Mac OS X 10.4, iSync also synchronized a user's Safari bookmarks with the MobileMe subscription service provided by Apple.

Starting with Mac OS X 10.4, much of iSync's original syncing functionality had been moved into the Sync Services framework, which developers can use to incorporate synchronization into their own applications. iSync, however, retained responsibility for the setup, configuration and synchronising of supported mobile handsets. Since the release of iTunes 4.8, the user interface for synchronizing iPods had been delegated to iTunes, although conflict-resolution and substantial changes to contact information (>5%) shows use of iSync. Synchronization with MobileMe (previously .Mac) was then the domain of MobileMe Sync, accessible through a System Preferences pane.

iSync was removed from Mac OS X in version 10.7 (Lion). However, since the underlying framework still existed in Lion and 10.8 (Mountain Lion), it was possible to restore the functionality of iSync using a 10.6 (Snow Leopard) installation or backup.