The Omni Group has released a Universal Binary update to
OmniDiskSweeper, its disk cleaning utility for Mac OS X. A free update for registered users, OmniDiskSweeper 1.5 costs $14.92.
OmniDiskSweeper helps Mac OS X users find “big, useless files” on their hard disks and free up space. It notes which files are used by the system so you don’t go around deleting important ones.
System requirements call for Mac OS X v10.3.9 or later.