Auth0 Single Sign On vs FusionAuth Security: Side-by-Side Comparison (2026)

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..

FusionAuth Security: Customer identity and access management platform with authentication features. built by FusionAuth. Core capabilities include Multi-factor authentication, Breached password detection, Authorization Code grant implementation..

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

Auth0 Single Sign On differentiates with Universal Login customizable authentication interface, Single Sign On across multiple applications, Single Sign Off session termination. FusionAuth Security differentiates with Multi-factor authentication, Breached password detection, Authorization Code grant implementation.

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

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