KDirStat (KDE Directory Statistics) is a small utility program that sums up disk usage for direcory trees, 
very much like the Unix 'du' command. It displays the disk space used up by a directory tree, both numerically 
and graphically. It is network transparent (i.e., you can use it to sum up FTP servers), and comes with 
predefined and user configurable cleanup actions. You can directly open a directory branch in Konqueror or the 
shell of your choice, compress it to a .tar.bz2 archive, or define your own cleanup actions.
