The Tildeverse is a bunch of shared UNIX or UNIX-like servers (in reality, all the ones I know of are Linux, which <sigh>), with individual user accounts, or "tildes" after the way you refer to a home directory in a URL or UNIX command line:
Anyone can sign up for one of these, tilde.town got back to me in a couple days over the holiday and I expect they're faster during reasonable times.
There's a bunch of little command-line utilities on tilde, like
alpine for local mail,
feels for blogging from text editor,
botany for watering a plant,
poem to get a random poem,
chat for a friendly local-system IRC; there's also a public IRC on Tildeverse (but it's more what you'd expect from a public IRC, so you may not like that).
If you used to use a shared UNIX server, this will all be very familiar and fun. If you haven't, it's a great way to learn more about command-line tools, how shared hosting works, how to write HTML the old-fashioned way, and so on.