I know I've had a hard time finding a nice mud client for my Mac and I found Mudlet, I also saw this on their version updates "MUDs that get onto Mudlet’s default profiles list are ones that either contribute to the open Mudlet project, or those that go the extra mile to add a great gaming experience for their players on Mudlet." I don't know what this may entail but I think it may be worth looking into. Macs have become quite popular in recent years and this client is cross platform and nearly as user friendly as Cmud, in my opinion.