Best Auth0 alternatives in 2026
These are the 2 closest tools to Auth0 that we track, ordered by what they cost to start. Each entry says how its pricing differs from Auth0's — based on the numbers we hold, not on who pays us. We do not publish a quality score, because we do not have one we can stand behind.
Of the 2 alternatives on this page, 1 publish a price we could verify. The cheapest paid step among them is Clerk at $25/user/mo billed annually, while Auth0 starts paid at $35/mo. Clerk publishes a free plan.
Why people leave Auth0
- Expensive as active users grow
- Configuration surface is large
- Migration away is difficult once embedded
These are the drawbacks listed in our own Auth0 review — not complaints we invented for this page.
- Keycloak
Open-source identity and access management.
vs Auth0: priced differently (Free vs Free tier).
Why switch to Keycloak
- Full identity server at no licence cost
- Standards support including SAML and OIDC
What you give up
- Operating it is a real responsibility
Best for: Organisations that need enterprise identity without a per-user bill.
- Clerk
Drop-in authentication and user management.
vs Auth0: priced differently (Free tier vs Free tier).
First paid step: Pro at $25/user/mo billed annually
Why switch to Clerk
- Prebuilt UI components that look decent by default
- Handles sessions, MFA and organisations
What you give up
- Pricing per monthly active user adds up
Best for: Product teams who would rather ship features than build authentication.
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