It's all emacslisp. Including the webserver (it's elnode). So there is an irc bouncer written in elisp tightly integrated with the elnode webapp. The bouncer uses a modified rcirc (built into emacs) to connect to the irc servers.
The robot framework is also written in emacslisp.
The irc servers are ngircd and the webserver is nginx.
The robot framework is also written in emacslisp.
The irc servers are ngircd and the webserver is nginx.