WizTree is a tool to analyze hard drive space similar to WinDirStat, but much faster. WizTree works well on all versions 32 and 64-bit of Windows XP, Vista, Windows 7, 8, and 10. WizTree will quickly scan the drive and displays the name and location of the file largest. Scan results are presented in the form ofa tree or list on the tab 1000 file. To delete a file, right-click on it and select Delete from the context menu. Analyzer WizTree marks the file system in grey, thus protecting them from being deleted due to accidentally. The developer claims that this program is one of the fastest programs.