Folder Magic for Windows

Folder Magic is an easy-to-use disk/server space analysis tool. With a few mouse clicks, you can determine the following: folders and files that are taking up too much space. Space/# files used by each user, amount of space used by each file type (images, music, spreadsheets, databases), # of files that are of a particular type (for example, number of .mp3 files). Data can be exported to various file formats.

Version 1.2.1 includes improved xml support.