Compare software

Keycloak vs authentik: catalog facts
Keycloak	authentik
Free Free and open source under the Apache 2.0 licence.	Free The software is free under its open-source licence. Hosting, hardware and external…
Self-hosted	Linux, Self-hosted, Web
Single sign-on and single sign-out across applications Supports OpenID Connect and SAML 2.0 identity brokering	One server covers SAML, OAuth2/OIDC, LDAP and RADIUS, with a flow builder that lets you compose the login…
Setting it up and securing it takes real administrative effort More than most single-user homelabs need	The flow model is powerful but confusing at first, and some organisation-scale features sit in a paid enterprise…
Self-hosted	Self-hosted
Open source	Open source
License: Apache-2.0	License: MIT
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 September 22, 2026

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