supertokens-corevskeycloak
SuperTokens is modern, opinionated, easier to ship. Keycloak is enterprise-grade SSO with SAML/LDAP/OIDC, decades of features, heavier to operate.
supertokens-core
github.com/supertokens/supertokens-coreSelf-hostable auth backend with managed cloud option. Full session management, user management dashboard, multi-tenancy. Good middle ground between rolling your own and using a SaaS like Auth0.
Full review →keycloak
github.com/keycloak/keycloakEnterprise auth/IAM platform. ~24k stars. Java-based, self-hosted, supports SAML, OIDC, fine-grained authorization. Heavy to operate but the right pick for compliance-heavy enterprise apps.
Full review →Which should you pick?
Pick supertokens-core if…
You want full control over auth data, self-hosting capability, and a working admin dashboard.
Skip supertokens-core if…
You want zero ops — managed providers will be less work.
Pick keycloak if…
You are doing enterprise SSO with SAML/OIDC and need self-hosting for compliance reasons.
Skip keycloak if…
You are a small team or a B2C product — way too much complexity.
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