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Zero-TOTP vs Flauth: catalog facts
Zero-TOTP	Flauth
Free Free and open source under the GPL-3.0.	Free Free and open source under the MIT licence.
Web, Self-hosted	Windows, macOS, Linux, Android, Command line
Zero-knowledge encryption of stored TOTP secrets Use the hosted service or self-host it	Same authenticator on Android and all three desktop systems Command-line tool for reading codes in a terminal
iOS app still in development and CLI only planned Small project with a limited contributor base	Small, young project with a single main developer No iOS app listed among the downloads
Web application, Self-hosted	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
Account needed	No account needed
Not stated if it works offline	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.