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DiskSavvy vs SpaceSniffer: catalog facts
DiskSavvy	SpaceSniffer
Freemium A free version is available, with paid editions for purchase.	Free Freeware with donations welcomed. The source code is not published.
Windows, Command line	Windows
Analyzes network shares and NAS devices as well as local disks Built-in file classification with charts and reports	A treemap makes the biggest space consumers obvious at a glance Drill down with one click, zoom with a double-click, filter by file type
Windows only Advanced features are in paid editions	Windows only Closed source freeware
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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.