TreeSize FreeTreeSize Free 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 Free is working. The results can be printed in a report.

Update Description:
Version 1.7.9:
- TreeSize does not stop any more on Access Denied errors with a message box, it now continues scanning.
- A few minor issues under Windows Vista have been fixed.

Homepage: http://www.jam-software.com/treesize/index.shtml
Download: TreeSizeSetup.exe
File Size: 853 KB