MXP (Mud eXtension Protocol)

MXP provides a markup language based loosely upon HTML and XML, designed to provide better communication between the server and client. You can read more about it here.

Of the 104 active characters on God Wars II, 55 use MXP, and of those only 30 last connected from a unique IP address. These 30 characters are broken down by client as follows:

MUSHCLIENT 28 (93.3%)
MUDLET 2 (6.6%)