Circle Security Circle Access vs ZITADEL: Side-by-Side Comparison (2026)

Circle Security Circle Access: Credential-free authentication via QR scan with zero credential storage. built by Circle Security. Core capabilities include Zero credential storage at the protocol level, QR code-based authentication (~2 second login), Passwordless authentication with no biometric template storage..

ZITADEL: Open-source, multi-tenant identity platform for authn, authz, and SSO. built by ZITADEL. Core capabilities include Hosted login page with customizable branding, Multi-factor authentication (MFA) enforcement, Passwordless authentication via Passkeys..

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

Circle Security Circle Access differentiates with Zero credential storage at the protocol level, QR code-based authentication (~2 second login), Passwordless authentication with no biometric template storage. ZITADEL differentiates with Hosted login page with customizable branding, Multi-factor authentication (MFA) enforcement, Passwordless authentication via Passkeys.

Circle Security Circle Access is developed by Circle Security. ZITADEL is developed by ZITADEL. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

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