If you're looking for a fun hobby project, you might check out this project, which is a Lua-based web server. It includes a graphical Lua debugger with a browser-based UI, powered by the Lua-based web server.

http://github.com/bhk/tooltree

See 'documentation' -> 'monoglot' -> 'Introduction'

Mate, if you are interested, I have just found this promising project:

http://www.sailorproject.org/

turbo is a tornado clone on lua and lapis is awesome too, turbo is a stand-alone server, lapis runs inside openresty the nginx + lua server.

Yes. It uses lapis. Running on top of nginx so huge configurability for all sorts of things.