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WizTree finds the files and folders using the most disk space on your hard drive Print E-mail
Click to Download WizTree

ver 1.07 [894Kb]  
Portable Zip

"Find the files and folders using the most space on your hard drive - QUICKLY!"
(WizTree is similar to applications like WinDirStat, TreeSize and Folder Size but is MUCH faster)

Works on 32 and 64 bit versions of Windows 2000, XP, Vista, Windows 7 and Windows 8

NB: WizTree only works on local NTFS format drives

 WizTree is FREE!

However, if you find WizTree useful and would like to help to support further development,

you can make a donation by clicking on the donate button.

A donation of $10 or more is recommended, but any amount is appreciated. Thank you!

  • Finds the files and folders using the most space on your hard drive
  • Works VERY Fast! We think it's the fastest application of this type in the world!
  • Finds the top 1000 largest files on your hard drive
  • Sort the contents of your entire hard drive by folder size and optionally delete files and folders

WizTree Tree View
WizTree Top 1000 largest files
 WizTree Tree View
 WizTree Top 1000 largest files
What is WizTree?
WizTree is a disk space analyzer. It scans your entire hard drive and shows you which files and folders are using the most disk space. It does this VERY QUICKLY. In fact, we believe WizTree to be the fastest application of this type in the world! 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!

How does it work?
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.
Why are some of my drives not selectable?
WizTree obtains information by directly scanning the the MFT file, so it can only work with local (directly attached) drives formatted with the NTFS file system. It won't work with network drives, substituted drives or non NTFS formatted drives. We may add support for other drive types in the future if there's enough demand.
What's new?
WizTree 1.07 (17 Sep 2013)
  • Fixed bug that could cause incorrect file sizes to be extracted from the MFT on some PCs.
WizTree 1.06 (16 Aug 2013)
  • Context menu would not appear when selecting directories exactly 3 characters in length in the root folder
WizTree 1.05 (8 Feb 2013)
  • fixed possible access violation when processing certain MFT files
  • memory usage decreased by 10%

WizTree 1.04 (4 Dec 2012)
  • Memory usage decreased by about 40%
  • Folder sizes now updated in real time as files are deleted
  • Can now cancel scan in progress
  • File deletion detection improved
  • Processing speed increased for very large MFT files
  • Improved error handling
WizTree 1.03 (1 Dec 2012)
  •  Fix possible hang while processing on some PCs
WizTree 1.02 (30 Nov 2012)
  •  Fix for possible access violation when using the new Windows explorer shell context menu

WizTree 1.01 (30 Nov 2012)
  • Right clicking tree and files now also shows Windows explorer context menu items. (This can be disabled via Options->Windows Explorer context menu)
  • Delete functions now use standard windows dialogs
  • Files or folders deleted using another application (e.g. Windows explorer) will be detected and displayed as deleted in the tree and file view
  • 'Invalid record pos' error caused by highly fragmented MFT files fixed
  • Right clicking on top 1000 file list would not always select file being clicked on (fixed)
WizTree 1.00 (23 Nov 2012)
  • Initial release
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