OS X 10.9 Mavericks (Cabernet)

OS X Mavericks (version 10.9) is the tenth major release of OS X (since June 2016 rebranded as macOS), Apple Inc.'s desktop and server operating system for Macintosh computers. OS X Mavericks was announced on June 10, 2013, at WWDC 2013, and was released on October 22, 2013 worldwide.

The update emphasized battery life, Finder improvements, other improvements for power users, and continued iCloud integration, as well as bringing more of Apple's iOS apps to OS X. Mavericks, which was named after the surfing location in Northern California,^[5] was the first in the series of OS X releases named for places in Apple's home state; earlier releases used the names of big cats.^[6][7]

OS X Mavericks was the first OS X major release to be a free upgrade since Mac OS X 10.1 "Puma".^[6][8]