However, the release date got delayed as Apple was way more focused on the development of the iPhone. The operating system was intended to be released at the end of 2006 or early 2007. Other applications like Spotlight, and Time Machine are also added. Numbers of changes like redesigned Dock Stacks, a semitransparent menu bar, and a better version of Finder are included. For those who wanted it as sever, they were about to pay 499$.

The operating system cost around 129$ for a single installation and 199$ for five computer installing setup. Two different editions of Leopard OS were released which were Mac OS X Leopard Server and Desktop operating system. It was the last version of macOS to support PowerPC architecture as Snow Leopard works only on Intel-based Macs. Mac OS X Leopard is the successor of Mac OS X 10.4 Tiger and was succeeded by Mac OS X 10.6 Snow Leopard. The first-ever Mac OS X 10.5 Leopard was released on October 26, 2007. Leopard is a reliable OS that provides a lightweight environment with a user-friendly interface. Apple has released a reliable operating system by providing numbers of enhancements on security along fixing numbers of bugs in their operating system. Mac OS X Leopard is the sixth major release by Apple.

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