Keycloak is an open-source identity and access management platform that provides single sign-on, social login, user federation, and fine-grained authorization for web, mobile, and API applications. It supports standards like OAuth 2.0, OpenID Connect, and SAML, making it a flexible alternative to proprietary IAM products.
Keycloak itself is free and open source under the Apache License 2.0 for self-hosted use. Red Hat offers paid support and enterprise offerings such as Red Hat Single Sign-On / Keycloak Services, with pricing typically based on subscriptions, support tiers, and deployment size rather than a simple public per-user plan.
Open Source
Keycloak is one of the strongest open-source IAM options available, especially for teams that need standards-based SSO, social login, and flexible authorization without vendor lock-in. Its main trade-off is operational complexity, since production deployments require careful configuration, scaling, and security hardening. It is ideal for developers, startups, and enterprises that have the engineering capacity to self-host or want a cost-effective IAM foundation.
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