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Zero-TOTP vs 2FAuth: catalog facts
Zero-TOTP	2FAuth
Free Free and open source under the GPL-3.0.	Free Free and open source under the AGPL-3.0 licence.
Web, Self-hosted	Web, Self-hosted
Zero-knowledge encryption of stored TOTP secrets Use the hosted service or self-host it	Codes available from any device with a browser Easy backup and restore of a standalone database
iOS app still in development and CLI only planned Small project with a limited contributor base	Requires running your own server Fully localised only in English and French
Web application, Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License: AGPL-3.0
Account needed	Not stated if an account is needed
Not stated if it 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 October 2, 2026

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