https://github.com/endgame/MudCore
It sits somewhere between socketmud and a full mud like tbamud in that it handles all the socket work and telnet negotiation, but it makes no assumptions about anything else. The other interesting thing is that it can talk to other services using ZeroMQ.
I'm interested in reactions, particularly in terms of coding style, documentation quality and so on. It's my main "presentation piece" so far, in that it's some of the first code I actually feel proud to have on the internet.
(Someone posted this 248 days ago, but it generated no discussion: http://news.ycombinator.com/item?id=2707979, I hope the repost is OK.)