xdu is described as 'Disk usage or other tree data display program. Typical usage: du -xm / | xdu -n' and is an app in the OS & Utilities category. There are more than 10 alternatives to xdu for a variety of platforms, including Windows, Linux, Mac, BSD and KDE. The best alternative is WinDirStat, which is both free and Open Source. Other great apps like xdu are TreeSize (Paid), Baobab Disk Usage Analyzer (Free, Open Source), ncdu (Free, Open Source) and JDiskReport (Free).
TreeSize Professional tells you where precious disk space has gone to. It can be started from the context menu of a local folder or a local drive and displays the size of each folder, including its subfolders.
Baobab Disk Usage Analyzer is a graphical application to analyse disk usage in any Gnome environment. Disk Usage Analyzer can easily scan device volumes or a specific user-requested directory branch (local or remote).
K4DirStat, fork of KDirStat , is a small utility program that sums up disk usage for directory trees, very much like the Unix 'du' command. It displays the disk space used up by a directory tree, both numerically and graphically.
Free open-source cross-platform file & directory statistics as found on Github - Generate a directory tree for any given folder - View any folder as colored rectangles (squarified algorithm) - Customize the rectangle colors and show statistics about filetypes - Export...