Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens for your online services.




The best open source Authenticator alternative to Google Authenticator is Aegis Authenticator. If that doesn't suit you, our users have ranked more than 50 alternatives to Google Authenticator and many of them are open source Authenticators so hopefully you can find a suitable replacement. Other interesting open source Authenticator alternatives to Google Authenticator are Ente Auth, Proton Authenticator, KeePass and Bitwarden Authenticator.
Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens for your online services.




Generates and stores two-factor authentication tokens with device encryption, offers secure cloud backup, multi-device synchronization, offline mode, and import/export through QR, file, or manual input. Migration and restore tools reduce risk of token loss.




Protect your accounts with Proton Authenticator, a private and secure cross-device two-factor authentication (2FA) that works offline. Created by Proton, the creators of Proton Mail, Proton VPN, Proton Drive, and Proton Pass.




Free and open source password manager offering secure local storage of passwords in an encrypted database, strong AES and Twofish encryption, master key or key file access, portable version, plugin support, password generation, and optional two-factor authentication.




Bitwarden Authenticator generates verification codes for two-factor authentication, ensuring your identity is verified when you log into accounts.




KeePassDX is a material design KeePass client for managing keys and passwords in an encrypted database for your Android device.




Keepass2Android is an open source password manager application for Android. It reads and writes .kdbx-files, the database format used by the popular KeePass 2.x Password Safe for Windows and other desktop operating systems.




2FAS Authenticator is a simple and free application for Two Factor Authentication (2FA Authentication) which generates Time-based One-time Passwords (TOTP) and PUSH authentication*.




FreeOTP is a two-factor authentication application for systems utilizing one-time password protocols with support for Android (6 or later) and iOS (11 or later). Tokens can be added easily by scanning a QR-code or by manually entering in the token configuration.




A free open-source two factor authentication app for Android. It features encrypted backups, icons, categories and a high level of customisation. It also has a Wear OS companion app.




Authenticator generates two-factor authentication (2FA) codes in your browser. Use it to add an extra layer of security to your online accounts.



Alternative client for the Bitwarden® platform & KeePass (KDBX), created to provide the best user experience possible.




Simple, open source, no ad, import/export of your data