RMG v0.2.8 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 'Uniform Size (Grid View)' not being disabled during emulation
Fix toolbar not respecting the view setting
Fix being stuck at the loading screen when having more ROMs than the ROM search limit
Improve error message when opening a ROM fails

Download: RMG v0.2.8
Source:Here