Mac OSX Leopard 10.5.4 Full (ISO)
Mac OS X 10.5 Leopard is Apple’s first major operating system upgrade since Tiger more than two years ago. The changes include more than 300 new features, which, while not earth-shattering, further streamline the experience of using a Mac.

Product features:

* Introduces over 300 new and enhanced features to OS X, including a new desktop and updated finder enabling easy browsing and sharing between multiple Macs
* Take advantage of the latest developments in processor hardware with full native 64-bit support, multi-core optimization, and new Core animation
* Preview files without opening an application using Quick Look
* Easily and automatically back up and restore lost files or a complete Mac with Time Machine
* Create groups of applications and instantly switch between them with Spaces