A small Multi Player mod that shows who is currently in your game, along with their position and a ascii compass pointing to the other player(s). Also, there's some buttons
JamesOFarrell and I made this mostly as a proof of concept so you can build GUIs in MP, feel free to steal it
I haven't been updating this mod since 0.11.4 or so, so something has probably been changed in the game since then. This mod deletes all GUIs when someone joins, and redraws them a short while later, just to avoid the desyncs. Maybe something in that area has been changed.