Mudlet - Mudlet is a freshly-minted MUD client, designed to take mudding to a new level.
OpenWrt - OpenWrt is an open-source firmware based on Linux for wireless routers
TinTin++ - TinTin++, aka tt++, is a free MUD client for Mac OS X, Linux, and Windows.
MikroTik RouterOS - The main product of MikroTik is a Linux-based operating system known as MikroTik RouterOS.
CMUD - Are you tired of the constant grind of the graphical MMO games?
AdvancedTomato - A Tomato by Shibby fork with intuitive and modern flat design GUI.