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 109 active characters on God Wars II, 62 use MXP, and of those only 37 last connected from a unique IP address. These 37 characters are broken down by client as follows:

MUSHCLIENT 28 (75.6%)
MUDLET 9 (24.3%)