Auth0 Passwordless Authentication vs Auth0 Single Sign On: Side-by-Side Comparison (2026)

Auth0 Passwordless Authentication: Passwordless authentication platform using passkeys, biometrics, and SMS/email. built by Auth0. Core capabilities include Passkey-based authentication, WebAuthn biometric authentication (face and fingerprint), SMS-based passwordless authentication..

Auth0 Single Sign On: SSO platform enabling users to authenticate once across multiple applications. built by Auth0. Core capabilities include Universal Login customizable authentication interface, Single Sign On across multiple applications, Single Sign Off session termination..

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

Auth0 Passwordless Authentication differentiates with Passkey-based authentication, WebAuthn biometric authentication (face and fingerprint), SMS-based passwordless authentication. Auth0 Single Sign On differentiates with Universal Login customizable authentication interface, Single Sign On across multiple applications, Single Sign Off session termination.

Auth0 Passwordless Authentication is developed by Auth0. Auth0 Single Sign On is developed by Auth0. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Auth0 Passwordless Authentication and Auth0 Single Sign On serve similar Multi-Factor Authentication and Single Sign-On use cases: both are Multi-Factor Authentication and Single Sign-On tools, both cover Single Sign On, Authentication, MFA. Review the feature comparison above to determine which fits your requirements.