OS X Mavericks

OS X Mavericks (version 10.9) is the tenth major release of macOS, Apple's desktop and serveroperating system for Macintosh computers. OS X Mavericks was announced on June 10, 2013, at WWDC 2013, and was released on October 22, 2013, worldwide. It was also the last version to use a mostly skeuomorphic design; the next release, OS X Yosemite, featured a redesign of the user interface appearance. It was distributed through the Mac App Store just like OS X Lion and Mountain Lion.

The update emphasized battery life, Finder improvements, other improvements for power users, and increased iCloud integration, as well as bringing more of Apple's iOS apps to OS X. Mavericks was named after the surfing location in Northern California. It also removed some of the skeuomorphic designs from OS X Mountain Lion, and it is the final version of macOS that features the Lucida Grande typeface as the standard system font since Mac OS X Public Beta in 2000.

Mavericks was the first OS X release to be named after a location in California, and the first to be a free upgrade since Mac OS X 10.1.