I built a service specifically to be a CORS sql database and user management api backend for neocities last year. The example app was forum single page app. I pimped it here but it didn't get any traction. It was my "wouldn't it be cool if" from building geocities sites back in the day. I guess there are a lot of other avenues for learning to code nowadays.

I just checked my old Tripod site -- it's still there, but the CGI appears to have broken:

    The proxy server could not handle the request GET /cgi-bin/hello.cgi.

    Reason: Could not connect to remote machine: Connection refused

Oh geez I forgot all about tripod doing that. That's one of the places I originally cut my teeth with perl. That and Matt's script archive (though I was quickly fixing or rewriting those as I learned)