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WinDirStatDiskBoss
Free

Free and open source under the GPL 2.0.

 Paid

Commercial software sold through the developer's purchase page.

Windows Windows, Command line
  • Treemap makes one enormous file obvious at a glance
  • Finds duplicates by hash and compares logical against physical size
  • Combines disk space analysis, duplicate search and file classification in one tool
  • Rule-based automation for organizing and migrating files
  • Windows only
  • The treemap is dense and takes a moment to learn to read
  • Windows only
  • Wide feature set can be more than a simple disk usage viewer needs
Downloadable app Downloadable app
Open source Closed source
License: GPL-2.0 License not stated
No account needed Not stated if an account is needed
Works offline Works offline

Checked September 21, 2026

Checked October 2, 2026

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