
Logto
Open-source auth and identity for SaaS and AI apps, built on OIDC with a hosted cloud option.
- Verified facts
- 4 of 4
- Alternatives ranked
- 5
- Approved reviews
- 0
- Visits sent from here
- 0
About Logto
Logto is an open-source identity service built on OpenID Connect and OAuth 2.1, with a polished admin console and customisable sign-in experience. It covers email, phone, social and passwordless sign-in, passkeys and MFA, organisations for multi-tenant SaaS, enterprise SSO, role-based access control, machine-to-machine apps and API resource protection. SDKs exist for most web, mobile and back-end frameworks, and it is increasingly positioned for securing AI agents and MCP servers. You can self-host the open-source edition for free or use Logto Cloud, which has a free plan for a sizeable user base and an affordable Pro plan that bills by token usage rather than per user. The licence is MPL-2.0. Developers often pick it as a friendlier alternative to Keycloak or a cheaper one to Auth0, though it has a smaller ecosystem and fewer enterprise extras than the long-established players.
Best for: SaaS developers who want open-source, standards-based auth with an affordable cloud.
Pros and cons
What works
- Open source and self-hostable, with a free cloud tier
- Clean admin console and customisable sign-in pages
- Multi-tenant organisations and RBAC built in
Why people leave
- Smaller ecosystem than Auth0 or Keycloak
- Some enterprise features are cloud or paid only
- Usage-based token billing takes some estimating
Top Logto alternatives
See all 5- 1
Zitadel66.5Similar open-source, multi-tenant design with data residency choices in its cloud.
- 2
Keycloak62.6More mature and widely deployed, with a permissive Apache licence.
- 3ClClerk59.6
Fully managed with prebuilt React components if you do not need self-hosting.
- 4
SuperTokens57.2Open-source alternative with simple per-user cloud pricing.
- 5
Auth055.3Established managed platform with a larger extension ecosystem.
Why people left Logto
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Logto: common questions
Is Logto free?
Yes. Logto is free, open-source software that you can host yourself.
Is Logto open source?
Yes. The source code is on GitHub at logto-io/logto. You can also run it on your own server.
What platforms does Logto run on?
Logto is available for Web and Self-hosted.
What are the best alternatives to Logto?
The highest-ranked Logto alternatives right now are Zitadel, Keycloak and Clerk. See the full ranked list for pricing, platforms and verified facts.