Software Alternatives, Accelerators & Startups

🔑 Two Factor Authentication

Systems for adding an extra layer of security through two-factor authentication.

The best Two Factor Authentication Products based on votes, our collection of reviews, verified products and a total of 579 factors.

Best Two Factor Authentication Products in 2025

  1. 229

    Google Authenticator is a multifactor app for mobile devices.

    free

    /google-authenticator-alternatives
  2. 235

    Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.

    /authy-alternatives
  3. 148

    Duo Security provides cloud-based two-factor authentication. Duo’s technology can be deployed to protect users, data, and applications from breaches, credential theft, and account takeover.

    /duo-security-alternatives
  4. 91

    One app to quickly and securely verify your identity online, for all of your accounts.

    /microsoft-authenticator-alternatives
  5. 111

    Azure Multi-Factor Authentication helps safeguard access to data and applications while meeting user demand for a simple sign-in process.

    /azure-multi-factor-authentication-alternatives
  6. 63

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

    /aegis-authenticator-alternatives
  7. 36

    Auth0 is a program for people to get authentication and authorization services for their own business use.

    Open Source

    /auth0-alternatives
  8. 30

    Enterprise-grade identity management for all your apps, users & devices

    /okta-alternatives
  9. 63

    Open source implementation of the two-factor authentication HOTP and TOTP schemes.

    /freeotp-alternatives
  10. 39

    Authenticator is a simple, free, and open source two-factor authentication app.

    Open Source

    /authenticator-alternatives
  11. 47

    LastPass is an online password manager and form filler that makes web browsing easier and more secure.

    /lastpass-authenticator-alternatives
  12. 31

    DIGIPASS offers two-factor​ authentication solutions for mobile applications.

    /digipass-alternatives
  13. 49

    The YubiKey is a one-time password device for secure login with two-factor authentication

    /yubikey-alternatives

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