This document compares features of Windows and Mac OS X operating systems. Windows is the most commonly used OS, pre-installed on most computers except Apple devices. It has features like HomeGroup for file sharing, Jump Lists for quick access to files, and Windows Search. Mac OS X Lion introduced gestures, full screen apps, Mission Control view, Mac App Store, and Launchpad. Both OSes allow managing devices and printers, though Windows may require additional driver installation. Security is generally better for Macs due to fewer viruses targeting the smaller user base.