
FusionAuth
8.3#1 in authentication softwareFrom $162 a monthFree planAndroidiOSWebAPI
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| Fact | FusionAuth | Keycloak |
|---|---|---|
| Authentication | It supports username/password login, identity providers, passkeys, and one-time passwords. | Keycloak supports passkeys, passwords, X.509 certificates, and two-factor authentication with recovery codes and TOTP/HOTP. |
| Authorization | FusionAuth provides role-based access control and fine-grained authorization capabilities. | Administrators can define fine-grained authorization policies for applications and services. |
| Deployment | The product can run locally, on premises, in a customer cloud, on an air-gapped server or as FusionAuth Cloud. | The downloads page provides a server distribution, a container image for Docker, Podman, Kubernetes, and OpenShift, and an operator for Kubernetes and OpenShift. |
FusionAuth suits teams managing end-user identity that want deployment choices from self-hosting to managed cloud. It is not positioned as a desktop integration or Active Directory replacement.
Keycloak suits organizations that need centralized authentication, single sign-on, and directory synchronization. It is also relevant to teams able to manage deployment and feature configuration themselves.