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Authelia vs Keycloak: catalog facts
Authelia	Keycloak
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the Apache 2.0 licence.
Linux, Web, Self-hosted	Self-hosted
Puts authentication and 2FA in front of applications that have none Fine-grained rules per domain, path, user and group	Single sign-on and single sign-out across applications Supports OpenID Connect and SAML 2.0 identity brokering
Requires a supported reverse proxy configured correctly to be secure Configuration is a large YAML file with many interacting options	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: Apache-2.0	License: Apache-2.0
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 22, 2026	Official website Full listing and sources Checked September 23, 2026

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