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Sifty vs PrivaZer: catalog facts
Sifty	PrivaZer
Free Free and open source under the MIT licence.	Freemium A free edition is available. PrivaZer PRO adds features for contributors.
Windows, Command line	Windows
Dry-run by default with a preview before deleting Deletes only to the Recycle Bin, with undo	Shows exactly what it will remove before doing anything Optional secure overwriting of freed space
Windows 10 and 11 only Terminal interface, no graphical window	Aggressive cleaning options can remove things you wanted to keep
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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