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WinDirStat vs Prunr: catalog facts
WinDirStat	Prunr
Free Free and open source under the GPL 2.0.	Free Free and open source under the MIT licence.
Windows	Windows, macOS, Linux
Treemap makes one enormous file obvious at a glance Finds duplicates by hash and compares logical against physical size	Duplicate finder and disk usage analyser in one app Previews and auto-selection for safer cleanup
Windows only The treemap is dense and takes a moment to learn to read	Young project with a small user base No documented command-line mode
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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