Flora is an IRCBot written on a modified CodeIgniter 2.1.3 base. I had to disable the pesky 5 minute processing timeout in order to keep the bot from timing out and disconnecting from the network. I did a few other modifications to the core libraries, so parts of it are not 100% compatible.
You can check out the dev source at http://bitbucket.org/mladoux/flora - bot still in early stages, but there is enough there that it runs, all you need to do is add your own triggers. I’ll have a user guide when I finish the first official release.