FusionAuth vs Keycloak
On the evidence we track, Keycloak leads this comparison with a composite score of 72/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for auth & identity software. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
FusionAuth
FusionAuth is an identity and access management solution providing comprehensive authentication capabilities including social login, passwordless authentication, multi-factor authentication, and single sign-on. It supports self-hosted, cloud, and hybrid deployment models with transparent, predictable pricing and full API-first integration.
Keycloak
LeaderCentralized authentication and authorization platform that manages user identity and access control across applications, reducing the need for individual apps to build their own login systems.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
FusionAuth
Free self-hosted Community edition. Paid cloud plans from $162/mo for Starter.
- CommunityFree
- Core authentication standards and features
- Community support via forums, Slack, and GitHub
- Self-hosted deployment
- Starter$162/mo when billed annually
- Premium authentication features
- Advanced MFA methods
- Application theming
- Breached password detection
- Machine-to-machine authentication
- +1 more
- EssentialsStarting at $2,970/mo billed annually
- Advanced connectivity, MFA, and security features
- Custom OAuth scopes
- Email support with 24-48 hour response during business hours
- Business hosting included
- EnterpriseContact sales
- All Essentials features
- Advanced threat detection
- SSO tenant manager
- 24/7 phone and email support
- Private Slack channel with contract
- +2 more
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
- LDAP
FusionAuth
- Legacy database systems
- Kafka
- Custom APIs
- Webhooks
Keycloak
Leader- GitHub
- Active Directory
- Kerberos
- Kubernetes
- Apache APISIX
- OpenTelemetry
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.