CIAM recommendation

[Tito Mari Francis Escaño]

Hi everyone,
Can you please recommend package(s) I can setup on OpenBSD to create a CIAM
or customer identity and access management system? This is to provide SSO
between enterprise applications. While it's easy to go for Linux option, I
prefer to build on top of the security offered by OpenBSD from the ground
up.
Would appreciate your pointers on this.
Thank you.