WhatSize

With WhatSize you can easily and clearly identify the size of directories and drives and their capacity currently used on Mac OS X. The program shows all the information for a particular directory and the file sub-directories it contains.

Note:
Since version 4.0 (10.4) WhatSize is no longer freeware. Therefore we offer you the last free version 3.10.91 for download. The latest version can be accessed via the website link.