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Sync your keychain between all of your Apple devices.

Make manual or periodic screenshots of your display or a portion of your display.

Gets your movies off DVD and onto your Mac.

Unlock your Mac by knocking on your iPhone.

Sync your Safari bookmarks across computers and to your iPhone.

Connect your Garmin GPS with your favorite website.

Chat with your Facebook friends on your Mac (was Facebook Messenger).

Chat with your Facebook friends on your Mac.

Synchronize your Google Docs with a folder on your hard drive.

Type SMS messages on your Mac and send them via your iPhone.