Mudlet - Mudlet is a freshly-minted MUD client, designed to take mudding to a new level.
MUSHclient - MUSHclient - a 32-bit MU* client
CMUD - Are you tired of the constant grind of the graphical MMO games?
Lectrote - A portable Interactive Fiction games interpreter application
Axmud - Axmud is a modern Multi-User Dungeon (MUD) client, written in Perl 5 / GTK 2, and known to run on...
Windows Frotz - Windows Frotz is an interpreter that can play all the old Infocom text adventures.