authentik vs keycloak
Side-by-side comparison of features, pricing, ratings, and alternatives.
Authentik is an open-source authentication server that provides a comprehensive solution for identity and access management. It offers a wide range of features, including multi-factor authentication, single sign-on, and user management.
Keycloak provides single sign‑on (SSO) and identity brokering for web, mobile, and API‑based applications. It supports standard protocols like OpenID Connect, OAuth 2.0, and SAML, allowing seamless integration with existing user stores. The platform includes an admin console, user self‑service, and fine‑grained authorization policies, all available under an Apache 2.0 license. It can be deployed on‑premises or used as a managed service, making it suitable for both startups and large enterprises.
- Highly customizable and scalable
- Supports multiple authentication factors and protocols
- Provides a comprehensive user management system
- Open-source and free to use
- Fully open source with no licensing fees
- Supports all major authentication standards
- Extensible with custom providers and scripts
- Strong community and Red Hat enterprise support
- Steep learning curve for non-technical users
- Requires significant setup and configuration
- May require additional infrastructure and resources for large-scale deployments
- Initial setup can be complex for beginners
- Admin UI may feel dated compared to newer SaaS solutions
- Self‑hosted scaling requires operational expertise
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The Verdict
AI-generated from listing dataKeycloak offers broader out‑of‑the‑box standards support and enterprise‑grade integrations, while authentik provides deeper customization and built‑in multi‑factor options; choose based on whether you prioritize ready‑made ecosystem or flexible workflow design.
Key differences
- •Keycloak includes built‑in multi‑tenant realms and extensive standard protocols (OAuth2, SAML) versus authentik’s focus on customizable authentication flows.
- •Keycloak lists specific integrations (LDAP, AD, Kubernetes, Docker, Spring Boot); authentik’s integration list is not detailed.
- •Authentik emphasizes multi‑factor authentication (passwords, tokens, biometrics) whereas Keycloak’s MFA support is not mentioned.
- •Support options differ: Keycloak offers Red Hat enterprise support; authentik provides email, Discord, and community support only.
Pricing & value
Both are free open‑source solutions with no licensing fees.
Ease of use / learning curve
Keycloak’s UI is dated but documented; authentik is noted as having a steep learning curve for non‑technical users.
Features & depth
Keycloak provides multi‑tenant realms, fine‑grained role/attribute policies, and broad standard protocol support.
Integrations & ecosystem
Keycloak lists LDAP, Active Directory, Kubernetes, Docker, Spring Boot; authentik’s integrations are not specified.
Support
Keycloak offers Red Hat enterprise support in addition to community channels; authentik only has community/email/Discord.
Scalability
Both claim self‑hosted scalability and high availability, but no quantitative data is provided.
Security & privacy
Authentik explicitly mentions multi‑factor authentication (passwords, tokens, biometrics); Keycloak’s MFA capabilities are not listed.
Choose authentik if…
Teams that require highly customizable auth flows and built‑in MFA.
Choose keycloak if…
Enterprises needing standard protocols, multi‑tenant realms, and enterprise support.
Common questions
Is there any cost difference between the two?
Both are free open‑source; no licensing fees are mentioned.
Which product has stronger out‑of‑the‑box integrations?
Keycloak lists LDAP, Active Directory, Kubernetes, Docker, and Spring Boot; authentik’s integration list is not provided.
Do both solutions support multi‑factor authentication?
Authentik explicitly supports passwords, tokens, and biometrics; Keycloak’s MFA support is not specified in the provided facts.