Authenticators
Two-factor and multi-factor authentication apps for generating TOTP codes and securing accounts beyond passwords.
Google Authenticator
Simple TOTP-based 2FA app by Google. Generates time-based one-time codes for securing accounts. Available on iOS and Android with cloud backup support.
Google Authenticator →Microsoft Authenticator
MFA app by Microsoft supporting TOTP codes, passwordless sign-in, and push notifications for Microsoft 365 and Azure AD accounts. Available on iOS and Android.
Microsoft Authenticator →Proton Authenticator
Standalone TOTP authenticator app by Proton. Stores 2FA codes in an end-to-end encrypted vault, with backup and sync across devices. Available on iOS and Android.
Proton Authenticator →Yubico Authenticator
TOTP authenticator app that stores credentials on a YubiKey hardware token rather than the device. Codes only generate when the YubiKey is physically present, eliminating phone-based attack vectors.
Yubico Authenticator →