It's a bit like a BBS, yes, and that's what drew me to the concept initially (I'm an early member of tilde.town; still reasonably active).

We do have an internal bulletin board, and an internal IRC (like the chat rooms of multi-line BBSes of the late 80s/early 90s). There are a ton of little projects by members, and the projects are pretty varied.

I find it a fun place to hang out, personally.

Yeah. That was my first thought. Its a BBS. Weird that you sign up via the web though.

You'd want to look at Enigma https://github.com/NuSkooler/enigma-bbs