Trebuchet Tk is a client program for connecting to TinyMU* and MOO style social MUD servers on the Internet. It'll also work with combat oriented MUDs like LPMUD and Diku, but it's not targeted at them.
Trebuchet is designed to be a GUI MUD client that is both easy to use, and as powerful as the text based TinyFugue client. It also supports the MCP-GUI server-side dialog protocols.
Mac OS X 10.2
Mac OS X 10.3
||Mac OS X 10.2 or later