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WizTree vs Folder Size: catalog facts
WizTree	Folder Size
Freemium Free for personal use. Commercial use, or removing the Donate button, requires a paid…	Freemium Free to use, with a paid registered edition available.
Windows	Windows
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	Bar and pie charts of disk usage Works on network shares and NAS devices
Closed source The MFT trick only applies to NTFS; other file systems fall back to a normal scan	Windows only Some functions tied to the paid registered edition
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 October 1, 2026

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