authentik vs Keycloak -- Open Source IAM Compared
authentik vs Keycloak (2026)
authentik (open source iam) and Keycloak (identity & access management) are cybersecurity tools that serve different segments of the market. authentik is self-hosted with open source + enterprise pricing and is best suited for teams wanting a modern, developer-friendly open-source identity provider with easy deployment. Keycloak offers self-hosted with open source + enterprise subscription pricing and targets teams that need full control, auditability, and zero license cost.
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The Verdict
The choice between authentik and Keycloak depends on your specific requirements, budget, and existing infrastructure. Both are established open source iam tools with different strengths. Evaluate each against your use case, integration needs, and team size to determine the best fit.
Tried authentik or Keycloak? Drop a quick rating.
authentik vs Keycloak at a Glance
| authentik | Keycloak | |
|---|---|---|
| Category | Open Source IAM | Identity & Access Management |
| Pricing | Free (Open Source) / Enterprise from contact | Free (open source) / Red Hat Build of Keycloak via subscription |
| Pricing Model | Open Source + Enterprise | Open Source + Enterprise Subscription |
| Open Source | Yes | Yes |
| Cloud Hosted | No | No |
| Self-Hosted | Yes | Yes |
| Founded | 2020 | 2014 |
| Rating | — | 4.2/5 |
Feature Comparison
Key capabilities of authentik and Keycloak compared side by side.
authentik
- +SAML, OAuth2, OpenID Connect support
- +LDAP and RADIUS provider
- +SCIM provisioning
- +Multi-factor authentication
- +User self-service portal
- +Application proxy with forward auth
- +Policy engine with flows
- +Customizable login flows
Keycloak
- +OpenID Connect, OAuth 2.0, and SAML 2.0 support
- +Identity brokering with social login providers
- +User federation with LDAP and Active Directory
- +Multi-factor authentication (TOTP, WebAuthn)
- +Adaptive authentication via custom authenticators
- +Fine-grained authorization services
- +Admin and Account REST APIs
- +Realms for multi-tenant deployments
- +Customizable login and account themes
- +Kubernetes operator for declarative deployment
Key Differentiators
Unique to authentik
- LDAP and RADIUS provider
- SCIM provisioning
- User self-service portal
- Application proxy with forward auth
Unique to Keycloak
- User federation with LDAP and Active Directory
- Fine-grained authorization services
- Admin and Account REST APIs
- Realms for multi-tenant deployments
When to Choose Each
Choose authentik if...
- →You need a tool best suited for teams wanting a modern, developer-friendly open-source identity provider with easy deployment
- →You want an open-source solution with full code transparency
- →Open Source + Enterprise pricing fits your budget model
Choose Keycloak if...
- →You need a tool best suited for teams that need full control, auditability, and zero license cost
- →You want an open-source solution with full code transparency
- →Open Source + Enterprise Subscription pricing fits your budget model
Pros & Cons Comparison
Keycloak
Pros
- +Free, fully open source, self-hosted forever
- +Rich feature set comparable to commercial platforms
- +Strong federation with LDAP and Active Directory
- +Large community and extensive extension ecosystem
Cons
- –Operational overhead of running it yourself
- –Admin UI is functional but dated
- –Requires expertise to deploy for high availability
- –Upgrades between major versions can be painful
authentik
Pros
- +Fully open source with active development
- +Modern, polished admin UI
- +Supports all major identity protocols
- +Easy Docker/Kubernetes deployment
- +Flexible flow-based authentication engine
Cons
- –Younger project than Keycloak
- –Smaller community and ecosystem
- –Enterprise features require paid license
- –Limited enterprise support options
Other authentik Alternatives
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Mid-market cloud IAM at a lower price point than Okta
Enterprise identity platform with AI-driven orchestration for complex deployments
Sources & References
- authentik (Official Site)[Vendor]
- authentik Reviews on G2[User Reviews]
- authentik Reviews on TrustRadius[User Reviews]
- authentik Reviews on PeerSpot[User Reviews]
- Keycloak (Official Site)[Vendor]
- Keycloak Reviews on G2[User Reviews]
- Keycloak Reviews on TrustRadius[User Reviews]
- Keycloak Reviews on PeerSpot[User Reviews]
- Gartner Magic Quadrant for Access Management 2024[Analyst Report]
- Forrester Wave: Identity-As-A-Service (IDaaS), Q4 2024[Analyst Report]
- KuppingerCole Leadership Compass: Access Management 2024[Analyst Report]
- NIST SP 800-63: Digital Identity Guidelines[Government Standard]
- FIDO Alliance: Passwordless Authentication Standards[Industry Standard]
- Gartner Peer Insights: Access Management[Peer Reviews]
authentik vs Keycloak FAQ
Common questions about choosing between authentik and Keycloak.
What is the main difference between authentik and Keycloak?
authentik (open source iam) and Keycloak (identity & access management) are cybersecurity tools that serve different segments of the market. authentik is self-hosted with open source + enterprise pricing and is best suited for teams wanting a modern, developer-friendly open-source identity provider with easy deployment. Keycloak offers self-hosted with open source + enterprise subscription pricing and targets teams that need full control, auditability, and zero license cost.
Is Keycloak a good alternative to authentik?
The choice between authentik and Keycloak depends on your specific requirements, budget, and existing infrastructure. Both are established open source iam tools with different strengths. Evaluate each against your use case, integration needs, and team size to determine the best fit.
How does Keycloak pricing compare to authentik?
authentik pricing: Free (Open Source) / Enterprise from contact (open source + enterprise). Keycloak pricing: Free (open source) / Red Hat Build of Keycloak via subscription (open source + enterprise subscription). The best option depends on your team size, usage patterns, and whether you need cloud-hosted, self-hosted, or hybrid deployment.
Can I migrate from authentik to Keycloak?
Migration from authentik to Keycloak is possible and depends on your specific setup. Both platforms offer APIs that can facilitate data migration. Consider running both tools in parallel during transition to ensure continuity. Check each vendor's migration documentation for specific guidance.
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