I'm looking for a utility to search for and delete duplicate files and clean up a hard drive. I have a guy at work who has a mac pro with 4 hard drives, and his boot drive keeps getting filled up. When I checked earlier today, he only had 500MB free on a 500GB drive. I didn't feel like digging through Finder and seeing what is taking up all this space. He says it happens on a regular basis. I suspect he has some duplicate files, or one of the apps is saving big files to this drive instead of one of his data drives. He does do a lot of our photos and digital imagery, so he has some huge Photoshop, Illustrator, and other type of files. I did a search with MRoogle, but a lot of the links that I found were dead. Any suggestions?