The new Reminders app makes managing tasks easy.Documents in the Cloud lets you create and edit your documents on your Mac, iPhone, and iPad.Messages also supports traditional instant messaging services like AIM, Yahoo! Google Talk and Jabber.

With iMessage, you can start a conversation on your Mac and pick it up on your iPhone or iPad.Send messages from your Mac to friends with an iPhone, iPad, or Mac.And with iCloud built-in, it's simple to keep all your mail, contacts, calendars, reminders, notes, to-do lists, music, photos, iWork files, PDFs, and more up to date across all your devices. Play head to head games on your Mac with friends on their Macs or iOS devices with Game Center. With Notes, you can write down all your ideas and even speak your words with voice dictation. With the Reminders app, you can create to-do lists and alerts that appear in the new Notification Center. The new Share button makes it easy to share files, Web pages, photos, and videos, as well as tweet right from the app you are using. With the new Messages app, you can send text, photos, videos, contacts, Web links, and documents to anyone using another Mac, iPhone, iPad, or iPod touch - you can even start a conversation on one device and continue it on another. Mountain Lion includes over 200 new features to update your Mac into the best computing experience yet. The same practice was also applied to its predecessor, Mac OS X Lion.Apple OS X Mountain Lion is the latest release of the world's most advanced desktop operating system. Apple later allowed free downloads of the OS, especially for customers of older and no longer officially supported Macintosh computers, starting on June 30, 2021. Mountain Lion was the last paid upgrade for an OS X major release, with OS X Mavericks and later being free. Mountain Lion sold three million units in the first four days, and has sold 28 million units as of June 10, 2013, making it Apple's most popular OS X release. OS X Mountain Lion received positive reviews, with critics praising Notification Center, Messages, and speed improvements over Mac OS X Lion, while criticizing iCloud for unreliability and Game Center for lack of games. It was released as a downloadable update later. Facebook integration was also planned but unfinished at launch date. Integrated links allowing the user to rapidly transfer content to Twitter were present in the operating system from launch. Mountain Lion also added a version of iOS's Notification Center, which groups updates from different applications in one place. As on iOS, Notes and Reminders became full applications, separate from Mail and Calendar, while the iChat application was replaced with a version of iOS's Messages. The operating system gained the new malware-blocking system Gatekeeper and integration with Apple's online Game Center and iCloud services, while the Safari web browser was updated to version 6.

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