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Keycloak vs Rauthy: catalog facts
Keycloak	Rauthy
Free Free and open source under the Apache 2.0 licence.	Free Free and open source.
Self-hosted	Web, Self-hosted
Single sign-on and single sign-out across applications Supports OpenID Connect and SAML 2.0 identity brokering	OIDC and OAuth 2 single sign-on PAM support for Linux logins
Setting it up and securing it takes real administrative effort More than most single-user homelabs need	Smaller community than established IAM servers Requires running and maintaining your own server
Self-hosted	Self-hosted
Open source	Open source
License: Apache-2.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.