QDirStat is a graphical application to show where your disk space has gone and to help you to clean it up. From the author of the original KDirStat. This is a Qt-only port of the old Qt3/KDE3-based one, now based on the latest Qt 5. It does not need any KDE libs or infrastructure. It runs on every X11-based desktop on Linux, BSD and other Unix-like systems. QDirStat features both tree and treemap which makes easier to identify disk usage.