RMG v0.9.1 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:
Fix controller presence detection in RMG-Input-GCA (thank you @EIREXE)
Use SDL GUID in RMG-Input (thank you @bmsuseluda)
Add mupen64plus-video-softrdp plugin (thank you @PixelMechanic0 for the suggestion)
Update mupen64plus-core, mupen64plus-video-GLideN64, SDL_GameControllerDB and LZMA SDK

Download: RMG v0.9.1
Source:Here