head to head · open source
Keycloak vs casdoor
Keycloak has 37,689 GitHub stars, 9,139 forks, 3,292 open issues and last shipped yesterday. casdoor has 14,751 stars, 1,886 forks, 97 open issues and last shipped 2 days ago. Keycloak leads on adoption by 156% (37,689 vs 14,751 stars). Keycloak is written in Java under Apache-2.0; casdoor is written in Go under Apache-2.0. Keycloak has attracted 24% as many forks as stars, casdoor 13%. 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 | casdoor | |
|---|---|---|
| GitHub stars | ★ 38K | ★ 15K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Java | Go |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 9.1K | ⑂ 1.9K |
| 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 casdoor if
- You want the casdoor feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and casdoor 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 casdoor
An open source, self hosted identity and access management platform Casdoor is a single sign on (SSO) and authentication server with a web console. It speaks OAuth 2.0 , OIDC , SAML 2.0 , CAS , LDAP , SCIM 2.0 , WebAuthn , TOTP/MFA and MCP , and connects to Google Workspace, Microsoft Entra ID (Azure AD), GitHub and many other identity providers. Website · Documentation · Live demo · Discord The sign in page your users see: password, email/SMS code, WebAuthn and Face ID, plus every social provider you enable. Admin console. Users, tokens, organizations and providers at a glance…
read the full casdoor overview →
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Frequently asked questions
Is Keycloak or casdoor more popular?
Keycloak has 37,689 GitHub stars and casdoor has 14,751. Keycloak has the larger community by that measure.
Are Keycloak and casdoor free?
Both are open source. Keycloak is licensed under Apache-2.0 and casdoor under Apache-2.0. Neither carries a licence fee.
What is the difference between Keycloak and casdoor?
Keycloak is written in Java and casdoor in Go. 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 casdoor?
Choose Keycloak if you want the larger community (37,689 stars) or its Apache-2.0 licence terms. Choose casdoor if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.