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TreeSize Free vs Folder Size: catalog facts
TreeSize Free	Folder Size
Freemium TreeSize Free is free for private and commercial use. TreeSize Personal, Professional and…	Freemium Free to use, with a paid registered edition available.
Windows	Windows
Reads the NTFS master file table, so scans finish quickly Folder tree sorted by size, updating while it scans	Bar and pie charts of disk usage Works on network shares and NAS devices
Windows only and closed source Duplicate search, reports and exports need a paid edition	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 21, 2026	Official website Full listing and sources Checked October 1, 2026

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