What MUD client do you use? I use /u/blueknight suggested Mudlet, but it doesn't have a profile for Discworld.
It exists on GitHub as well: https://github.com/nickgammon/mushclient
I used to use zMUD (http://www.zuggsoft.com/page.php?file=zmud/zmudinfo.htm), but looks like it maybe never made it past Windows XP.