Keycloak vs Rauthy
Single sign-on and user federation for applications. A lightweight OpenID Connect provider with passkeys, MFA, and PAM logins. Compare the capabilities you need, then check hosting, licensing and maintenance. This pair is shown for browsing but is not indexed (not among the leading projects of a shared category).
| Attribute | Keycloak | Rauthy |
|---|---|---|
| Purpose | Single sign-on and user federation for applications. | A lightweight OpenID Connect provider with passkeys, MFA, and PAM logins. |
| Documented capabilities | Single sign-on, OIDC and SAML, User federation | OpenID Connect and OAuth 2 provider, Passkeys and MFA, Admin UI and user account dashboard, Events, auditing, and brute-force protection, PAM logins |
| Best-fit workflow | Platform teams putting one login in front of several applications. | Self-hosters who want a small, secure SSO server. |
| Check before choosing | Keycloak is an identity system, not a drop-in widget. Plan themes, realms, and upgrades. | Read the production setup in the Rauthy book before going live. |
| Deployment options | Docker, Kubernetes | Docker |
| GitHub stars | 37,379 | 1,379 |
| License | Apache-2.0 | Apache-2.0 |
| Self-hosted | Yes | Yes |
| Docker noted | Yes | Yes |
| Cloud / hosted | Not recorded | Not recorded |
| Primary language | Java | Rust |
| Last commit | 2026-10-16 | 2026-10-15 |
| Difficulty | Advanced | Moderate |
| Content source | Editorial catalog entry | Editorial catalog entry |
| Metadata checked | 2026-10-16 | Check the current repository |
| Forks | 9.1k | 149 |
| Star growth | +301 (2026-10-01 to 2026-10-16) | Not recorded |
| Alternative to | Auth0, Okta | Okta |
This comparison uses recorded capabilities, not hands-on performance tests. A capability missing from one record does not mean that product lacks it. Confirm edition, version and current pricing in the official documentation.
When to consider Keycloak
Platform teams putting one login in front of several applications.
Keycloak is an identity system, not a drop-in widget. Plan themes, realms, and upgrades.
Keycloak documentation and sourceWhen to consider Rauthy
Self-hosters who want a small, secure SSO server.
Read the production setup in the Rauthy book before going live.
Rauthy documentation and sourceKeycloak vs Rauthy questions
- What is Keycloak?
- Single sign-on and user federation for applications.
- What is Rauthy?
- A lightweight OpenID Connect provider with passkeys, MFA, and PAM logins.
- Can you self-host Keycloak and Rauthy?
- Both can be self-hosted.
- What licenses do Keycloak and Rauthy use?
- Keycloak uses the Apache-2.0 license. Rauthy uses the Apache-2.0 license.
- Which has more GitHub stars, Keycloak or Rauthy?
- Keycloak has 37k stars and Rauthy has 1.4k. Stars show attention; check recent commits and releases for maintenance.
- What languages are Keycloak and Rauthy written in?
- Keycloak is mainly written in Java. Rauthy is mainly written in Rust.