graphical disk map
GdMap is a tool which allows to visualize disk space. To display directory structures cushion treemaps are used which visualize a complete folder or even the whole hard drive with one picture. Cushion treemaps display directories and files in rectangular areas. The larger a file is the larger is the rectangle which represents it. All files in one directory are painted within the rectangle of that directory.
Homepage: https://gdmap.sourceforge.net/