stefan, Do you want to add a "log in with your fediverse account" functionality to your site? I am working on a self-hosted node.js server that lets you do just that.
Care to give it a try?
https://github.com/stefanbohacek/auth-server
You can see it working on:
#fediverse #OpenWeb #nodejs #opensource #WebDev #WebDevelopment #selfhosted