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What's new in OS X Mountain Lion

A quick, visual tour of the most important new features in Apple's latest operating system: OS X Mountain Lion

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Apple brags that OS X Mountain Lion boasts more than 200 new features. Even though that number involves some creative counting, there are a lot of impressive additions. Here are 14 of the most important.



The marquee new security feature in Mountain Lion is Gatekeeper - but you won't find a new pane for it in System Preferences. Instead, you open up the General tab in the Security & Privacy preference pane and (after providing your administrator credentials) set the Allow Applications Downloaded From option. That single setting is the front-end for Gatekeeper.

  • Meet Mountain Lion
  • Notifications Center
  • Getting to grips with iCloud
  • Systemwide sharing
  • Gatekeeper
  • AirPlay Mirroring
  • Auto-Save
  • Taking a power nap
  • Reminders
  • Messages - more than just iChat
  • Contacts
  • Calendar
  • Lots more you can do in Notes
  • Amping up security in Safari
  • Designating VIPs in Mail



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