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Folder Size vs Disk Usage (DU): catalog facts
Folder Size	Disk Usage (DU)
Freemium Free to use, with a paid registered edition available.	Free Free download from Microsoft.
Windows	Windows, Command line
Bar and pie charts of disk usage Works on network shares and NAS devices	Small standalone executable with no installer Scriptable output for reports
Windows only Some functions tied to the paid registered edition	Command-line only, no visual breakdown Windows only
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Proprietary
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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