A MUD client for Android, iOS, Linux, Mac OS X and Windows
Cooperative multiplayer graphical RPG and adventure game
Full featured MUD server with all the trimmings.
Arianne is an engine to develop multiplayer online games like Stendhal
MUD server, based on CircleMUD code, russificated
BattleTech MUX Client
A Tile-based Game Engine written in C# mimicing retro consoles.
Tintin++ scirpts for MUD (mmorpg)
JamochaMUD is a Java MUD/MUCK client.
Provides a full suite of clients and servers for virtual worlds.
GGMud is a cross platform modern MUD client.