Sign-in & identity

Keycloak

The heavyweight open-source identity server.

open source self-hostable Red Hat · US

Red Hat's identity and access management: every protocol, every feature, a Java footprint.

Website ↗ Source ↗ Plan “Sign-in & identity” with it

How you can run it

Way	Where the data lives	Price basis	Verdict
Host it myself	your own server or hardware	free	green — You run it yourself: no data leaves your own infrastructure.

Facts

Company / project	Red Hat (US), part of IBM
Licence	Apache-2.0
Self-hosting footprint	1024 MB RAM · 1 vCPU · 2 GB — small deployment: a household or a team of up to ~20 people
Commonly replaces	Okta
Provenance	curated, verified 2026-09-04

Machine-readable: /api/tools/keycloak.json. Something wrong? Tell us.