WinDirStat is a visual drive space manager that uses treemaps to represent each file as a colored rectangle, allowing you to instantly visualize file distribution across an entire drive or folder. In addition, the file types are color coded and can be clicked to reveal file name and details with options to access via Windows Explorer, copy the path, or to delete the file. The concept is very similar to SequoiaView, however it provides additional folder tree access and an easier to use interface, as well as right-click integration via SendTo menu.