OS X 10.9 Mavericksfor Mac

OS X 10.9 Mavericks supersedes OS X 10.8 Mountain Lion and is the first version of OS X to be free. It introduces some new features like Apple Maps, iBooks, Finder tabs, support for multiple displays, and Keychain integration with iCloud. Mavericks focuses on enhancing integration with iOS, offering improvements rather than revolutionary changes. Apple Maps on Mac provides an alternative to Google Maps for planning journeys, while iBooks allows users to read across devices seamlessly with iCloud syncing.

Another notable feature is the enhanced Calendar, Keychain, and Safari, offering better usability and integration. Mavericks also brings tabbed browsing to Finder and support for multiple desktops, providing an all-round faster OS X experience with improved memory management and battery life conservation through App Nap.