Leopard introduces a significantly revised desktop, with a redesigned Dock, Stacks, a semitransparent menu bar, and an updated Finder that incorporates the Cover Flow visual navigation interface first seen in iTunes. With the release of Snow Leopard, Leopard will only be maintained with security updates until the next shipping version of Mac OS X.ДЄccording to Apple, Leopard contains over 300 changes and enhancements over its predecessor, Mac OS X Tiger, covering core operating system components as well as included applications and developer tools. Leopard is the final version of Mac OS X to support the PowerPC architecture as Snow Leopard solely functions on Intel based Macs. Leopard was superseded by Mac OS X Snow Leopard (version 10.6). Apple CEO Steve Jobs stated at the 2008 Macworld Conference & Expo that over 20% of Macs were using Leopard as their operating system.

Leopard was released on 26 October 2007 as the successor of Mac OS X Tiger (version 10.4), and is available in two variants: a version suitable for personal computers, and a server version, Mac OS X Server.

support/leopard/ (archived) Mac OS X Leopard (version 10.5) is the sixth major release of Mac OS X, AppleвЂ™s desktop and server operating system for Macintosh computers.

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