PowerScan is a disk scanning utility that lets you list the contents of any disk or folder, filter the result and remove duplicate items. Using an extensible plug-in architechure, PowerScan can scan StuffIt, Compact Pro and Font/DA suitcase files automatically. Filters can also be integrated into the application in a similar fashion. PowerScan takes advantage of Apple's Thread Manager (included) to run several tasks concurrently or in the background. Easy to use, yet very powerful user interface with full support for Balloon Help.