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Keycloak vs Kanidm: catalog facts
Keycloak	Kanidm
Free Free and open source under the Apache 2.0 licence.	Free Free and open source.
Self-hosted	Linux, Self-hosted, Command line
Single sign-on and single sign-out across applications Supports OpenID Connect and SAML 2.0 identity brokering	OAuth2, LDAP and passkeys in a single server Unix integration for Linux logins
Setting it up and securing it takes real administrative effort More than most single-user homelabs need	Smaller ecosystem than long-established directory servers Requires running and securing 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	No account 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.