Compare software

Ory HydraKeycloak
Freemium

Free to self-host; a hosted version is offered on Ory Network.

 Free

Free and open source under the Apache 2.0 licence.

Self-hosted Self-hosted
  • OpenID Certified OAuth and OIDC implementation
  • Works with an existing user management system
  • Single sign-on and single sign-out across applications
  • Supports OpenID Connect and SAML 2.0 identity brokering
  • Headless: you build login and consent screens yourself
  • Requires OAuth and OIDC knowledge to deploy
  • Setting it up and securing it takes real administrative effort
  • More than most single-user homelabs need
Self-hosted, Hosted service Self-hosted
Open source Open source
License not stated 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

Checked October 2, 2026

Checked September 23, 2026

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