Built on a rock-solid UNIX foundation, OS X is engineered to take full advantage of the technologies in every new Mac. And to deliver the most intuitive and integrated computer experience.
Just sign in once one your new Mac with your Apple ID to set up iCloud in Mail, Contacts, Calendar, Messages, Safari, the Mac App Store, and FaceTime, and more.
Send and receive messages, contacts, photos, and even HD video to anyone on an iPhone, iPad, iPod touch, or another Mac. Start a conversation on your Mac and pick it up on your iOS device.
Create any type of listâ€”even set due dates to receive alerts and organise tasks into custom lists.
Keep track of whatever’s on your mind — include photos, movies, and links, too. Pin important notes to your desktop so they’re easy to get to.
Keep track of the new stuff that pops up on your Mac–new emails, messages, calendar events, reminders, and more.
Use the Share button, found throughout apps in Mountain Lion, to easily share right from the app you are in.
iCloud tabs makes web pages opened on your iPad, iPhone, iPod touch or another Mac available on all devices. New Smart Search gives one search field for both web addresses and search terms.
Talk anywhere you can type. No set up or training, works with the built-in mic, works with any app and supports English, French, German, and Japanese.
Wirelessly share whatever’s on your Mac to your HDTV using your Apple TV. Stream presentations, video, web pages, spreadsheets, and more without ever plugging in a single cable.
Log into the new Game Center app to see all of your Mac and iOS games. Track leaderboards and achievements, discover friends and games, play multiplayer games between Mac, iPad, iPhone, and iPod touch.