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Authenticator vs Aegis Authenticator: catalog facts
Authenticator	Aegis Authenticator
Free Free and open source under the GPL 3.0 or later.	Free Free and open source under the GPL, with no accounts and no paid tier.
Linux	Android
Supports both TOTP and HOTP codes Fits in with the GNOME desktop	The vault is encrypted with AES-256-GCM, unlocked by password with scrypt or by biometrics Automatic backups of the vault to a location you choose, plain or encrypted
Built for Linux desktops only Codes live on the desktop rather than on a phone you carry	Android only No cloud sync; you own the backup process
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
Not stated if an account is needed	No account 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 21, 2026

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