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SuperTokens

Open-source user authentication you can self-host without limits or run on a per-user cloud.

Open sourceSelf-hostableAuthentication providers
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About SuperTokens

SuperTokens is an open-source alternative to Auth0, Firebase Auth and Cognito. It is split into a core service that stores users and sessions, back-end SDKs that run inside your API, and front-end SDKs with prebuilt, customisable login UI. Recipes cover email and password, passwordless magic links and OTP, social login, sessions with rotating refresh tokens, MFA, multi-tenancy and user roles. Because the SDK runs in your own back end, you can override almost any step of a flow in code. Self-hosting the open-source features is free with no user cap; the managed cloud charges per monthly active user above a free allowance, and some features such as MFA and account linking are paid add-ons in either mode. It is backed by Y Combinator. SuperTokens suits teams who want control and predictable costs, though it supports fewer back-end languages than the big hosted providers.

Best for: Developers who want self-hostable auth with prebuilt UI and code-level control.

Pros and cons

What works

  • Self-hosted open-source features are free without user limits
  • Prebuilt login UI plus overrides for every step
  • Simple per-user pricing on the managed cloud

Why people leave

  • Back-end SDKs cover fewer languages than larger rivals
  • Some features like MFA are paid add-ons even when self-hosted
  • You run the core service yourself when self-hosting

Top SuperTokens alternatives

See all 6
  1. 1Better Auth logo
    Better Auth

    A TypeScript library with no separate core service and no paid feature gates.

    66.5
  2. 2Keycloak logo
    Keycloak

    Full identity server with SAML and LDAP federation for enterprise needs.

    62.6
  3. 3Logto logo
    Logto

    Open-source with a polished admin console and a free cloud tier for 50,000 users.

    59.6
  4. 4Cl
    Clerk

    Fully managed with richer prebuilt components if you no longer want to self-host.

    57.2
  5. 5Ory logo
    Ory

    Headless, Apache-licensed components designed for very large scale.

    55.3

Why people left SuperTokens

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

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SuperTokens: common questions

Is SuperTokens free?

Yes. SuperTokens is free, open-source software that you can host yourself.

Is SuperTokens open source?

Yes. The source code is on GitHub at supertokens/supertokens-core. You can also run it on your own server.

What platforms does SuperTokens run on?

SuperTokens is available for Web and Self-hosted.

What are the best alternatives to SuperTokens?

The highest-ranked SuperTokens alternatives right now are Better Auth, Keycloak and Logto. See the full ranked list for pricing, platforms and verified facts.

See all 6 SuperTokens alternatives