ErisMUD is a MUD/MOO engine and server written in Python and SQLite and supports many features: it has rooms, chat, NPCs, items, player creation, ANSI colors, etc. Internal commands take care of the development and maintenance.
ircbot written in perl, since i got more and more uncomfortable with the licencing sceme here, i mved the project to https://savannah.gnu.org/projects/zebot/