This Windows tool displays a graph of your disk space usage per folder. It also has a facility for comparing two folders and listing differences, and finally the ability to perform a differential backup of only modified/new files in a folder to a new folder. There is no compression, but the files remain accessible even without the software tool since the backup is made by file copies.
Full Specifications
What's new in version 1
General
ReleaseNovember 7, 2008
Date AddedFebruary 19, 2007
Version1
Operating Systems
Operating SystemsWindows, Windows 2000, Windows XP
Additional RequirementsWindows 2000/XP/2003 Server