Compare software

Ory HydraApereo CAS
Freemium

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

 Free

Free and open source.

Self-hosted Self-hosted
  • OpenID Certified OAuth and OIDC implementation
  • Works with an existing user management system
  • Supports CAS, SAML, OAuth and OpenID Connect
  • Many deployment options including Docker and Kubernetes
  • Headless: you build login and consent screens yourself
  • Requires OAuth and OIDC knowledge to deploy
  • Complex to deploy and configure for small setups
  • Requires Java servlet and build tooling knowledge
Self-hosted, Hosted service Self-hosted
Open source Open source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked October 1, 2026

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