I'm looking for a list of products (open-source preferred) that implement all modern authentication protocols (SAML 2.0, OpenID Connect, Pre-authentication mandatory) and handle everything related to these. Once a user is resolved, they are sent into a configured endpoint that consumes the final user (our application in that case).
The provided product should handle everything and be configurable, through a GUI preferably, and just provide a payload with a username and a list of groups/attributes.
The goal is simple, the product should be an industry standard solution that lets us never have to deal with any of these protocols and just provide us a payload with a username and a set of attributes (e.g. groups).