Best Free & Open Source Alternatives to Google Authenticator
Looking for a free or self-hosted alternative to Google Authenticator? Below you'll find the best open source options — community-driven tools that let you own your data without vendor lock-in or recurring subscription costs.
Google Authenticator is a free mobile app developed by Google that provides two-factor authentication (2FA) to enhance account security. It generates time-based, one-time passcodes (TOTP) or counter-based codes (HOTP) that users enter along with their password when signing into supported services. By scanning a QR code or entering a setup key, users can link the app to their accounts, ensuring that even if a password is stolen, unauthorized access is far less likely without the corresponding code from the app. It works offline, making it both secure and convenient for protecting online accounts.
Google Authenticator
Google Authenticator is a free mobile app developed by Google that provides two-factor authentication (2FA) to enhance account security. It generates time-based, one-time passcodes (TOTP) or counter-based codes (HOTP) that users enter along with their password when signing into supported services. By scanning a QR code or entering a setup key, users can link the app to their accounts, ensuring that even if a password is stolen, unauthorized access is far less likely without the corresponding code from the app. It works offline, making it both secure and convenient for protecting online accounts.