Mac OS X 10.8.0

Mac OS X 10.8.0 (build 12A269) is the first public release of OS X 10.8 (Mountain Lion) on July 25, 2012 by Apple Inc.

Development history
The first developer preview of OS X 10.8.0 was seeded as a download on February 16, 2012 for members of the Apple Developer program. The second and third developer previews were released on March 16 and April 18, respectively. The fourth developer preview was released on June 11 during the 2012 Worldwide Developers Conference.