Disk Usage Apps for the Mac

Trying to clear out some unknown space on your Mac? You need a disk usage utility. An application that analyzes your hard drive, and gives you a visual representation of your stored files. This helps you keep track and clear out older files you may have forgotten about, taking up valuable space.

Here are my favorite free tools to accomplish this:

Disk Inventory X
GrandPerspective
OmniDiskSweeper

OverDisk: Visualize your Hard Disk Space

The OverDisk usage browser generates an interesting radial map of your folder structures. It displays the folders and subfolders with the size on the map reflecting the percentage of disk usage on a selected hard drive. More information can be displayed by hovering the mouse over the elements of the radial map, including folder names, number of files and folders and size occupied on the hard drive. Additionally the toolbar menu provides statistical information. OverDisk is Freeware for Windows only.

OverDisk - Website & Download