CMud is a powerful telnet client designed for MUD players. It supports ANSI, VT100, SSL, SSH (Pro only), NAWS, EOR, ECHO, MXP, MSP, MCP, MCCP, and ATCP (and a few others). Built in scripting based on TINTIN, support for Lua, Perl, Python, Ruby, and JS. Highly customizable user interface, and one of the most advanced automatic mappers.
Version 3.12 is the present Beta release, which became available in early December. Unlike previous versions of ZMud and CMud, it has moved the mapping utilities to a database format.
Version 3.13 was released 1/30/2010, and includes several fixes. The complete list of changes are listed at http://www.zuggsoft.com/page.php?file=cmud/version.htm