Description: OS X Mountain Lion - the latest version of the most advanced operating system in the world. 

Mountain Lion includes over 200 new features that enhance your Mac. With new Messages app, you can send text, photos, videos, contacts, links and documents to any user Mac, iPhone, iPad, or iPod touch - you can even start conversation on one device and continue on another. 
The new export button allows you to easily send links, web pages, photos, videos, and publish tweets directly through the application to which you are working. On the Reminders app you can create lists and receive alerts via the new Notification Center. Play on Mac with friends using a Mac or device iOS, in the Game Center. A built-in service iCloud stores your mail, contacts, calendars, reminders, notes, lists, music, photos, files, iWork, PDF documents and more on all your devices