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Kanidm vs Keycloak: catalog facts
Kanidm	Keycloak
Free Free and open source.	Free Free and open source under the Apache 2.0 licence.
Linux, Self-hosted, Command line	Self-hosted
OAuth2, LDAP and passkeys in a single server Unix integration for Linux logins	Single sign-on and single sign-out across applications Supports OpenID Connect and SAML 2.0 identity brokering
Smaller ecosystem than long-established directory servers Requires running and securing your own server	Setting it up and securing it takes real administrative effort More than most single-user homelabs need
Self-hosted	Self-hosted
Open source	Open source
License not stated	License: Apache-2.0
No account 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 September 23, 2026

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