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Flauth vs Authenticator: catalog facts
Flauth	Authenticator
Free Free and open source under the MIT licence.	Free Free and open source under the GPL 3.0 or later.
Windows, macOS, Linux, Android, Command line	Linux
Same authenticator on Android and all three desktop systems Command-line tool for reading codes in a terminal	Supports both TOTP and HOTP codes Fits in with the GNOME desktop
Small, young project with a single main developer No iOS app listed among the downloads	Built for Linux desktops only Codes live on the desktop rather than on a phone you carry
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
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 24, 2026

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