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Authenticator vs Yubico Authenticator: catalog facts
Authenticator	Yubico Authenticator
Free Free and open source under the GPL 3.0 or later.	Free The app is free; it requires a YubiKey, which is bought separately.
Linux	Windows, macOS, Linux, Android, iOS
Supports both TOTP and HOTP codes Fits in with the GNOME desktop	Secrets stay on the hardware key rather than the device Same codes available on any machine where the key is plugged in
Built for Linux desktops only Codes live on the desktop rather than on a phone you carry	Requires a YubiKey Losing the key loses access to the stored codes unless you have a backup
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	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

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