Stutbot is an IRC bot. He lived in #ramblingwaffles on irc.23x.net where he provided many useful services, and some not so useful.
I initially wrote Stutbot in PHP. Then I wanted to learn more about developing C++ daemons on Linux, so I rewrote him in C++. C# came along and I used Stutbot as a project to port as a learning experience. No doubt he'll get rewritten again when I decide to learn Ruby properly.
When I get a chance I'll try and dig out all three implementations and post the code here.