Folder Size for Windows (inc in explorer)) vs http://windirstat.info/download.html

http://sourceforge.net/projects/foldersize/?source=recommended  

Description

Folder Size for Windows adds a new column to the Windows Explorer details view that displays the sizes of files and folders. A service scans your hard disk in the background and caches the results. Designed for performance!

Folder Size for Windows Web Site

 

///http://windirstat.info/download.html -- image view ))