I am looking for a file size manager for the Mac. You know in iTunes, how you can see everything on your iDevice, and it shows what is taking up so much memory? I want something like that on the mac, except more intuitive, right down to the files and folders, just as a reference. Just so I can see what is taking up a lot of space. I just want to know because my Mac seemingly lost 500 gb of space in a matter of months. no idea how, but a tool like that would help me clear it up. I need the program to be free, as well.