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DiskSavvy vs WinDirStat: catalog facts
DiskSavvy	WinDirStat
Freemium A free version is available, with paid editions for purchase.	Free Free and open source under the GPL 2.0.
Windows, Command line	Windows
Analyzes network shares and NAS devices as well as local disks Built-in file classification with charts and reports	Treemap makes one enormous file obvious at a glance Finds duplicates by hash and compares logical against physical size
Windows only Advanced features are in paid editions	Windows only The treemap is dense and takes a moment to learn to read
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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