The best bet for that right now is something like Keycloak. There are a multitude of challenges in running any non-profit, but one that provides higher-touch s

The best bet for that right now is something like Keycloak. There are a multitude of challenges in running any non-profit, but one that provides higher-touch services like an IdP to other businesses has some particular challenges. With something like Let’s Encrypt, there exists a single set of standards being implemented, and if you don’t like those standards and the way they’re implemented you walk away. With an IdP, there is a huge amount of ongoing support you have to provide to users. “Why is the ‘aud’ attribute not making it through to this one application?” “Why did my directory sync suddenly stop working and the logs are blank?” and so on. You would end up effectively needing to run a privately funded foundation, and that would require the political desire within businesses to fund and operate it.