What is WizTree?
WizTree is a very high speed disk space analyser utility for Windows. It scans your hard drive and shows you which files and folders are using the most disk space. Your entire hard drive's file system is displayed visually, making it very easy to locate large files and folders. Use the information WizTree provides to quickly locate and remove "space hogs" from your hard drive.
WARNING: Take care not to remove any files that are required for the correct operation of your PC!
What makes WizTree so fast?
When scanning NTFS formatted hard drives (most modern hard drives use this format), WizTree reads the hard drive's Master File Table (MFT) directly from the disk. The MFT is a special hidden file used by the NTFS file system to keep track of all files and folders on a hard drive. Scanning for files this way completely bypasses the operating system (Windows) and provides a huge performance boost.
WizTree can also scan non NTFS hard drives, network drives, USB drives and individual directories.