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WinDirStatWizTree
Free

Free and open source under the GPL 2.0.

 Freemium

Free for personal use. Commercial use, or removing the Donate button, requires a paid…

Windows Windows
  • Treemap makes one enormous file obvious at a glance
  • Finds duplicates by hash and compares logical against physical size
  • Reads the NTFS master file table, so scans finish in seconds rather than minutes
  • Treemap view of the whole drive alongside a sorted file and folder list
  • Windows only
  • The treemap is dense and takes a moment to learn to read
  • Closed source
  • The MFT trick only applies to NTFS; other file systems fall back to a normal scan
Downloadable app Downloadable app
Open source Closed source
License: GPL-2.0 License not stated
No account needed No account needed
Works offline Works offline

Checked September 21, 2026

Checked September 20, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.