
The applications are available, but they will be not updated anymore. Also its hard to find 10. Just a note that 10.6 Snow Leopard is Intel Only and will not install on any Power PC Mac. and any programs and files for upgrading such software that may be. After you install 10.5 you can upgrade it to 10.5.8 via Software Update.

The development of the old versions is discontinued. Mac OS X 10.4 Tiger (Intel Mac),Mac OS X 10.4 Tiger (PPC Mac),Mac OS X 10.5 Leopard. Requirements: Intel-based Mac or Mac with Apple silicon using macOS Ventura 13. Tiger was released to the public on Apfor US129. OnyX 4.5.0 for macOS Sonoma 14 will be available 10 to 15 days after Apple releases the final version of Sonoma. Mac OS X Tiger (version 10.4) is the 5th major release of macOS, Apples desktop and server operating system for Mac computers.

Use the correct version, and don't try to use a version intended for an earlier operating system. There is a specific version of OnyX for each major version of the operating system. OnyX is a reliable application which provides a clean interface to many tasks that would otherwise require complex commands to be typed using a command-line interface. OnyX is a multifunction utility that you can use to verify the structure of the system files run miscellaneous maintenance and cleaning tasks configure parameters in the Finder, Dock, Safari, and some Apple applications delete caches remove certain problematic folders and files rebuild various databases and indexes and more. Mac OS X 10.4 Tiger was included with all new Macs, and was also available as an upgrade for existing Mac OS X users, or users of supported pre-Mac OS X systems.
