RMG v0.3.3 is released. Rosalie's Mupen GUI is a free and open-source mupen64plus GUI written in C++. It offers a simple-to-use user interface.

RMG changelog:
Remove "Controller Is Plugged In" checkbox in RMG-Input
Remove text from 'Remove' button in RMG-Input
Add "None" input device to RMG-Input (replacing the "Controller Is Plugged In" checkbox)
Add "Automatic" input device to RMG-Input
Add support for creating profiles in RMG-Input
Add icons to 'Remove', 'Refresh', 'Reset' and 'Options' buttons in RMG-Input

Download: RMG v0.3.3
Source:Here