Duo Single Sign-On (SSO) vs Rublon Authenticator: Side-by-Side Comparison (2026)

Duo Single Sign-On (SSO): SSO solution with MFA integration for cloud and on-premises applications. built by Duo Security. Core capabilities include Single sign-on authentication with digital token generation, SAML 2.0 and OIDC protocol support, Pre-built integrations for hundreds of applications..

Rublon Authenticator: Free mobile app for MFA via push notifications, TOTP, and QR codes. built by Rublon. Core capabilities include Mobile Push authentication with one-tap approve/deny, Offline TOTP-based Mobile Passcode generation, QR Code authentication..

Both serve the Multi-Factor Authentication and Single Sign-On market but differ in approach, feature depth, and target audience.

Duo Single Sign-On (SSO) differentiates with Single sign-on authentication with digital token generation, SAML 2.0 and OIDC protocol support, Pre-built integrations for hundreds of applications. Rublon Authenticator differentiates with Mobile Push authentication with one-tap approve/deny, Offline TOTP-based Mobile Passcode generation, QR Code authentication.

Duo Single Sign-On (SSO) is developed by Duo Security. Rublon Authenticator is developed by Rublon. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Duo Single Sign-On (SSO) and Rublon Authenticator serve similar Multi-Factor Authentication and Single Sign-On use cases: both are Multi-Factor Authentication and Single Sign-On tools, both cover MFA, Authentication, SSO. Key differences: Duo Single Sign-On (SSO) is Commercial while Rublon Authenticator is Free. Review the feature comparison above to determine which fits your requirements.