Most of us has faced lot out of disk space situation. It’s truly helpful to to know which folder is utilizing the disk space to do the cleanup. Here’s a freeware, called TreeSize

[This is the same image displayed in http://www.jam-software.com/]
TreeSize Free tells you where precious space has gone to. TreeSize Free can be started from the context menu of a folder or drive and shows you the size of this folder, including its subfolders. You can expand this folder in Explorer-like style and you will see the size of every subfolder. Scanning is done in a thread, so you can already see results while TreeSize Free is working. The space, which is wasted by the file system, can be displayed and the results can be printed in a report. TreeSize Free is freeware for Windows 2000/XP/Vista. Users of Windows 9x/ME can download last compatible version TreeSize Free.
