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Microsoft Entra ID vs Keycloak: catalog facts
Microsoft Entra ID	Keycloak
Paid Subscription service with a free trial.	Free Free and open source under the Apache 2.0 licence.
Web	Self-hosted
Central cloud directory for user accounts Single sign-on to applications	Single sign-on and single sign-out across applications Supports OpenID Connect and SAML 2.0 identity brokering
Cloud-only, tied to Microsoft's platform Aimed at organisations rather than individuals	Setting it up and securing it takes real administrative effort More than most single-user homelabs need
Hosted service	Self-hosted
Closed source	Open source
License not stated	License: Apache-2.0
Account needed	Not stated if an account is needed
Needs internet	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.