Filelight graphically represents a file system as a set of concentric segmented rings , aiming to show where disk space is being used. Segments expand from the center, representing files and directories. The size of segments is proportional to the size of the files they represent. Directories have child segments which represent the files they contain.

Filelight is a KDE graphical disk-space analyzer with an innovative presentation technique. Instead of showing a tree view of the files on your disk, or even a columns-represent-directories view like xdiskusage, it shows a series of concentric pie charts representing the various directories on your hard disk and the amount of space they take up.