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Authenticator vs Google Authenticator: catalog facts
Authenticator	Google Authenticator
Free Free and open source under the GPL 3.0 or later.	Free Free to download and use.
Linux	Android, iOS
Supports both TOTP and HOTP codes Fits in with the GNOME desktop	Generates codes without a network connection Optional sync of codes across devices via a Google Account
Built for Linux desktops only Codes live on the desktop rather than on a phone you carry	Cloud sync ties your codes to a Google Account Not open source
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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