MUD Gopher - Telnet to any of many, many MU*'s from here.
MUD Resource Collection - List of links to many useful sources of MUD information. There is a particular emphasis on MUSHes, although there is plenty of general information as well.
Top MUD Sites - Top 100 ranked list, database, forums, articles and reviews. Players can find new MUDs to play and admins can promote their MUDs.
United Council of Multiple MUDsites - A gaming network which features both text and graphical MUDs, related resources, advertising and service.
