Auth that doesn't suck
Keycloak is bloated. Auth0 is expensive. Clerk doesn't support SAML. Idenplane gives you everything — self-hosted, open-source, and actually lightweight.
Idenplane is an open-source, self-hosted identity and access management (IAM) server — a lightweight alternative to Keycloak and Auth0. It implements the standards you already rely on — OAuth 2.0 with PKCE, OpenID Connect, and SAML 2.0 — plus MFA, WebAuthn, and multi-tenant realms, and ships 10 official SDKs across web, mobile, and backend. Unlike Keycloak, it runs on TypeScript instead of the JVM, so it boots in about 30 seconds and uses around ~150 MB of RAM under load. Unlike Auth0, it runs on your own infrastructure under the AGPL-3.0 license, with no per-user pricing and no vendor lock-in. If you want standards-compliant identity you can self-host — and read the source of — Idenplane is built for you.
Memory and throughput figures vs Keycloak are from an internal k6 load test (50 virtual users, 60s, identical workload against both). Other figures are estimates, not benchmarked.
A modern Keycloak and Auth0 alternative
Same standards, without the JVM weight or the per-user bill.
Idenplane as a Keycloak alternative
Keycloak is powerful but heavy: it runs on the JVM, takes minutes to start, and its admin console feels dated. Idenplane keeps the standards teams adopt Keycloak for — OAuth 2.0, OIDC, SAML 2.0, LDAP federation, and multi-tenant realms — while running in TypeScript at ~150 MB of RAM, with a modern React admin console and native iOS/Android SDKs Keycloak doesn’t offer. It’s a self-hosted, open-source Keycloak alternative you can run in about 30 seconds.
Idenplane vs KeycloakIdenplane as an Auth0 alternative
Auth0 is a managed SaaS priced per monthly active user, so costs climb as you grow and your identity data lives in Auth0’s cloud. Idenplane is an open-source, self-hosted Auth0 alternative: the same OAuth 2.0, OIDC, and SAML 2.0 flows, with no per-MAU pricing, full data ownership, and no vendor lock-in. Bring your users across with the built-in Auth0 migration path.
Idenplane vs Auth0For Developers
For Engineering Leaders
For DevOps & Platform Teams
Everything in one package
No add-ons, no premium tiers, no surprise bills. Every feature is included.
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