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Google Cloud Identity vs Keycloak: catalog facts
Google Cloud Identity	Keycloak
Freemium Can be started for free; paid tiers add further features.	Free Free and open source under the Apache 2.0 licence.
Web	Self-hosted
Combines identity, access and device management API for provisioning users, groups and devices	Single sign-on and single sign-out across applications Supports OpenID Connect and SAML 2.0 identity brokering
Requires verifying a domain you own Hosted by Google only, with no self-hosted option	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 October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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