Journalizer

Journalizer allows you to activate or deactivate Apple's new file journaling feature without using the command line, and, you don't need to be running OS X server software.

File journaling is part of Mac OS X 10.2.2, and previous versions will not allow you to use file journaling. Use the software at you own risk, of course. You can learn more about file journaling at the Apple knowledge base archive at the Apple website. Requirements
PPC, Mac OS X 10.2.2 or later