OpenSource mud client designed to work on both windows,linux and MAC OS X. Written in Gtk+ and C with SQLLite, Python, MSP, MXP, HTML, and ZMP support. Provides plugin support, automapper functionality, triggers, aliases and macros.
SWAL is a program that can launch as a service (or standalone) and monitor other services and control other programs. Written in C++ and might have some .NET components (planning on a linux port)
A GTK+ MUD client with support for MCCP, MXP, support for the zChat and MudMaster peer-to-peer chat protocols, the MUD sound protocol (MSP), Telnet GA support, regexp trigger support, aliases, Perl and Python plugin support.