I have GGMud on my powerbook G4 from some months, right now. I can say that works fine for me. I use it to play my preferred MUD (Lumen et Umbra and Shadows of Isildur) with no problems. You can easily change default Colors and Fonts from the Preferences menu, easily define your Triggers and setting different access to your preferred MUDs through the World Wizard. Everything I need for my Mudding experience is there...and free! So, thank's a lot to the developper and keep up the good work!