The OS X 10.8 Mountain Lion is an operating system that was designed, developed, and sold by Apple from 2012 to 2013 alongside Apple’s personal computers. The system has been released on July 25, 2012, and was available for $19.99 from Mac App Store, or was preinstalled on currently sold computers.
This software gets the last update (10.8.5) on October 3, 2013, and later has been replaced by a newer version OS X 10.9 Mavericks.
OS X has been named to signify its status as a refinement of the previous Mac OS X version, Lion, Apple’s stated aims in developing Mountain Lion were to allow users to more easily manage and synchronize content between multiple Apple devices and to make the operating system more familiar.
The OS X Mountain Lion 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. 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.
Mountain Lion also added a version of iOS’s Notification Center, which groups updates from different applications in one place. Integrated links allowing the user to rapidly transfer content to Twitter were present in the operating system from launch. Facebook integration was also planned but unfinished at the launch date. It was released as a downloadable update later.
Today OS X 10.8 Mountain Lion is 10 years old!

OS X 10.8 Mountain Lion General Information
Released | July 25, 2012 |
Original Price | $19.99 from the Mac App store |
System Requirements | iMac Mid 2007 or newer MacBook Late 2008 Aluminum or newer MacBook Early 2009 or newer MacBook Pro Mid 2007 or newer MacBook Air Late 2008 or newer Mac mini Early 2009 or newer Mac Pro Early 2008 or newer Xserve Early 2009 2 GB of memory 8 GB of available disk space Mac OS X 10.6.8 or later |
Distribution | Mac App Store |
Versions
Versions | Build | Release Date |
OS X 10.8 | 12A269 | July 25, 2012 |
OS X 10.8.1 | 12B19 | August 23, 2012 |
OS X 10.8.2 | 12C54 | September 19, 2012 |
OS X 10.8.2 Supplemental Update | 12C60 | October 4, 2012 |
OS X 10.8.3 | 12D78 | March 14, 2013 |
OS X 10.8.4 | 12E55 | June 4, 2013 |
OS X 10.8.5 | 12F37 | September 12, 2013 |
OS X 10.8.5 Supplemental Update | 12F45 | October 3, 2013 |