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Keycloak vs Janssen Project: catalog facts
Keycloak	Janssen Project
Free Free and open source under the Apache 2.0 licence.	Free Free and open source.
Self-hosted	Self-hosted
Single sign-on and single sign-out across applications Supports OpenID Connect and SAML 2.0 identity brokering	OAuth and OpenID Connect Auth Server Agama low-code identity orchestration
Setting it up and securing it takes real administrative effort More than most single-user homelabs need	Many components make it complex to operate Aimed at organisations with dedicated identity engineers
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.