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WizTree vs DiskSavvy: catalog facts
WizTree	DiskSavvy
Freemium Free for personal use. Commercial use, or removing the Donate button, requires a paid…	Freemium A free version is available, with paid editions for purchase.
Windows	Windows, Command line
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	Analyzes network shares and NAS devices as well as local disks Built-in file classification with charts and reports
Closed source The MFT trick only applies to NTFS; other file systems fall back to a normal scan	Windows only Advanced features are in paid editions
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 20, 2026	Official website Full listing and sources Checked September 24, 2026

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