Keycloak ranks #6 in Authentication & Identity AI search.

Keycloak is an open-source Identity and Access Management (IAM) solution created by Red Hat engineers Bill Burke and Stian Thorgersen, with its first production release in September 2014. It provides centralized authentication, authorization, and user management for modern applications and services via standard protocols—OpenID Connect, OAuth 2.0, and SAML 2.0. Key capabilities include Single Sign-On, user federation with LDAP and Active Directory, identity brokering with external providers, fine-grained authorization services, and customizable authentication flows. Self-hosted under the Apache 2.0 license with zero licensing fees, Keycloak is widely adopted across enterprises, government bodies, and research institutions. Since April 2023 it has been a CNCF incubating project. An enterprise-supported distribution, Red Hat build of Keycloak, is available via Red Hat subscriptions.