FIDO Alliance vs Keycloak: Side-by-Side Comparison (2026)

FIDO Alliance: Industry alliance developing open standards for passwordless authentication. built by FIDO Alliance. Core capabilities include Open authentication standard development (FIDO2, WebAuthn, passkeys), Vendor certification and interoperability programs, Passwordless authentication specifications..

Keycloak: Open-source IAM solution for SSO, MFA, and identity federation. built by keycloak. Core capabilities include Single sign-on (SSO), Multi-factor authentication with passkeys and recovery codes, Identity federation with external providers..

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

FIDO Alliance differentiates with Open authentication standard development (FIDO2, WebAuthn, passkeys), Vendor certification and interoperability programs, Passwordless authentication specifications. Keycloak differentiates with Single sign-on (SSO), Multi-factor authentication with passkeys and recovery codes, Identity federation with external providers.

FIDO Alliance is developed by FIDO Alliance. Keycloak is developed by keycloak. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

FIDO Alliance and Keycloak 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, Open Source. Key differences: FIDO Alliance is Free while Keycloak is Commercial. Review the feature comparison above to determine which fits your requirements.