head to head · open source
Keycloak vs Logto
Keycloak has 37,657 GitHub stars, 9,129 forks, 3,292 open issues and last shipped yesterday. Logto has 14,837 stars, 1,212 forks, 183 open issues and last shipped yesterday. Keycloak leads on adoption by 154% (37,657 vs 14,837 stars). Keycloak is written in Java under Apache-2.0; Logto is written in TypeScript under MPL-2.0. Keycloak has attracted 24% as many forks as stars, Logto 8%. Keycloak was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Keycloak | Logto | |
|---|---|---|
| GitHub stars | ★ 38K | ★ 15K |
| License | Apache-2.0 | MPL-2.0 |
| Written in | Java | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 9.1K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Keycloak if
- You weight community size — 38K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick Logto if
- You want the Logto feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and Logto fits your workflow better
About Keycloak
Open Source Identity and Access Management Add authentication to applications and secure services with minimum effort. No need to deal with storing users or authenticating users. Keycloak provides user federation, strong authentication, user management, fine grained authorization, and more. Help and Documentation Documentation User Mailing List Mailing list for help and general questions about Keycloak Join keycloak for general questions, or keycloak dev on Slack for design and development discussions, by creating an account at Reporting Security Vulnerabilities If you have found a security vulnerability, please…
read the full Keycloak overview →
About Logto
Logto Logto is the modern, open source auth infrastructure for SaaS and AI apps. It takes the pain out of OIDC and OAuth 2.1 and makes it easy to build secure, production ready auth with multi tenancy, enterprise SSO, and RBAC. website • cloud • docs • api • blog • auth wiki • newsletter Why Logto? Built for teams scaling SaaS, AI, and agent based platforms without the usual auth headaches. With Logto, you get: Multi tenancy, enterprise SSO, and RBAC : ready to use, no workarounds. Pre built sign in flows , customizable UIs, and SDKs for 30+ frameworks. Full support for OIDC, OAuth 2.1, and SAML without the…
read the full Logto overview →
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Frequently asked questions
Is Keycloak or Logto more popular?
Keycloak has 37,657 GitHub stars and Logto has 14,837. Keycloak has the larger community by that measure.
Are Keycloak and Logto free?
Both are open source. Keycloak is licensed under Apache-2.0 and Logto under MPL-2.0. Neither carries a licence fee.
What is the difference between Keycloak and Logto?
Keycloak is written in Java and Logto in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Keycloak or Logto?
Choose Keycloak if you want the larger community (37,657 stars) or its Apache-2.0 licence terms. Choose Logto if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.