The master branch contains code in use on Chatterbox/UKChatterbox2. You most likely don't want this, as it's mostly network specific. I'll set-up another fork of InspIRCd for public edits and modules.
UKChatterbox2/Chatterbox is a chat rooms service and social network, with IRC servers/channels forming the chat side of the service. UKCB2-InspIRCd is a fork of the InspIRCd c++ irc software. Highly efficient and configurable, it's our software of choice. It contains numerous changes mostly tweaks within the core functions as well as custom modules where the changes to core modules were significant. For these reasons, this is probably not something you want to run yourself, it's highly customized to our needs.