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

  2. 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.

  3. LoginTC is a simple, secure 2-Factor Authentication solution.

  4. YubiKey provides security solutions for strong two-factor authentication using U2F, OTP, PIV, and more.

  5. Clef is secure two-factor with no passwords or tokens.

  6. The only full stack Identity & Access Manager. The IAM solution encompasses: multi-factor authentication, single sign-on,enterprise password manager & vaulting, end point access management, directory services & over 60,000 application integrations.

    freemium

  7. Rublon is a multi-factor authentication for WordPress.

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

  9. passQi provides both an intelligent password management mobile app and a complementary server-side solution called mFactor to implement a proprietary Multi Factor Authentication login for WordPress and other web sites.

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