How does Atlas compare to Clerk and Auth0?
- Topic
- Getting started
- Asked by
- Teams evaluating Atlas
Atlas is designed as an open alternative to Clerk and Auth0. The headline differences:
You can run it yourself. Clerk and Auth0 are hosted-only. Atlas runs against your own Postgres, on your own domain and infrastructure, so your identity data never has to leave systems you control.
Security is not tiered. Encryption at rest, tenant isolation, rotating tokens and a full audit trail ship on every instance from day one, rather than being reserved for enterprise plans.
B2B from your first commit. Multi-tenant organizations, roles and invitations are core, not a late-stage add-on.
Drop-in developer experience. Typed SDKs and prebuilt components (
<SignIn/>,<AtlasProvider/>, hooks) get you to a working sign-in in minutes, the same ergonomics you'd expect from Clerk.Enterprise features without a rebuild. SAML, SCIM and enforced SSO are available when a customer asks, without re-architecting.
If you already use Clerk or Auth0, Atlas provides an import path — see the migration guide in the docs.
Atlas gives you Clerk- and Auth0-class capabilities — drop-in UI components, organizations, MFA, SSO — but adds true self-hosting and ships enterprise-grade security on every tier instead of paywalling it.