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Flauth vs Zero-TOTP: catalog facts
Flauth	Zero-TOTP
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0.
Windows, macOS, Linux, Android, Command line	Web, Self-hosted
Same authenticator on Android and all three desktop systems Command-line tool for reading codes in a terminal	Zero-knowledge encryption of stored TOTP secrets Use the hosted service or self-host it
Small, young project with a single main developer No iOS app listed among the downloads	iOS app still in development and CLI only planned Small project with a limited contributor base
Downloadable app	Web application, Self-hosted
Open source	Open source
License: MIT	License: GPL-3.0
No account needed	Account 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 October 2, 2026

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