Helios is doing a bunch of stuff. You can host your website here and get at a shell via ssh. If you're a fancy ssh hacker, you can use Helios as a SOCKS proxy, too - although I'd prefer that you keep that to a minimum, since it does use some bandwidth. If there's demand for it, I'll set up email accounts here. Any script interpreters or what-have-you that you want, ask Paul to install. scp and sftp work well for copying files back and forth.
It never hurts to host a local copy of the Hyperspec.
Without further ado, links to user webpages (contact Paul if you want to be listed here).