KMuddy is a MUD client powered by KDE. It aims to be the most powerful, fast, feature-rich and easy to use MUD client.
The current version already offers many features such as powerful external scripting (which supports very many languages such as Python, Perl, Lua, C/C++), and it's own internal scripting. It has split-screen scrolling, command history, buttons, gauges, logging (both in plain text and HTML), multiple connections, regex support (on both aliases and triggers).
All in all, KMuddy is a very powerful competitor among MUD clients on Linux already, and we're looking to expand to Windows and Mac platforms with the coming of KDE 4.
These details are provided for information only. No information here is legal advice and should not be used as such.