TreeSize tells you where precious disk space has gone to. It can be started from the context menu of a folder or drive and shows you the size of this folder, including its subfolders. Each folder can be expanded in Explorer-like style to see the size of its subfolders. Scanning is done in a thread, so you can already see results while TreeSize is working. The results can be printed in a report.

DISKdata is a powerful explorer-like application for Windows 95/98/ME/NT/2000/XP that analyzes disk space utilization. Selecting a disk volume or folder displays a summary of its contents in report or chart format. Statistics include file/folder actual size, allocated size, storage efficiency, storage slice, modification date, attributes, extension and version information.