iTool is a free multifunction utility for Leopard

iTool is a free multifunction utility for a complete system maintenance, it's easy to use, also for "the first time" users; iTool is built around a tabbed interface that lets you find quickly the wanted task.
iTool can perform automate processes that will run the chosen tasks, to handle your maintenance tasks with no fuss at all.
For those who don't want to fiddly with choices, iTool can guide you thru a compact maintenance wizard called <> that will help you troubleshoot problems within your system just with a few steps.

iTool not only maintains you system healthy, it also lets you tweak hidden functions of you Mac OS X 10.5 (Leopard) system.