WizTree has a rather simple layout, and it's not too difficult to figure out how it operates. Like WinDirStat, you must choose a disk for the application to scan; however, WizTree lets you select a drive at the top of your screen rather than prompting you.  Like WinDirStat, WizTree has a defragging and check fragmentation option, a welcome addition. You can also navigate directly to that file in your file explorer or use a command prompt.  When utilizing WizTree, you can tell it is 46 times faster than WinDirStat's website. In addition, WizTree is faster than WinDirStat, which takes minutes. Of course, this applies to all drive analyses, not just the initial one.