schmonz.com is a Fediverse instance that uses the ActivityPub protocol. In other words, users at this host can communicate with people that use software like Mastodon, Pleroma, Friendica, etc. all around the world.
This server runs the snac software and there is no automatic sign-up process.
Process, not product. It took me ten years to realize that the process I use to achieve my goals is more important than the end result.
https://www.conferencesthatwork.com/index.php/soapbox/2010/10/process-not-product