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Keycloak vs SimpleSAMLphp: catalog facts
Keycloak	SimpleSAMLphp
Free Free and open source under the Apache 2.0 licence.	Free Free community project; donations fund development.
Self-hosted	Self-hosted
Single sign-on and single sign-out across applications Supports OpenID Connect and SAML 2.0 identity brokering	Works as both SAML 2.0 IdP and SP Also speaks CAS, OpenID Connect, WS-Federation and OAuth
Setting it up and securing it takes real administrative effort More than most single-user homelabs need	Requires a PHP server and SAML know-how to configure No hosted version
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 2, 2026

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