RMG v0.7.8 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 ROM browser loading screen showing '[0/0]'
Fix configuration dialog of RMG-Input not closing when pressing escape
Fix AppImage not including libhidapi-hidraw
Fix AppImage not working on nvidia GPUs since v0.7.7 (thank you @Samueru-sama)
Fix casing in error message in RMG-Core
Fix missing space for 'Start:' label in RMG-Input
Fix inconsistent height for UI elements in RMG-Input
Fix mupen64plus not being shutdown properly
Fix high memory requirement introduced in v0.7.1 (see mupen64plus/mupen64plus-core#1103 (comment))
Add bounds checking for some DMA operations (see mupen64plus/mupen64plus-core#1122)
Add new controller image to RMG-Input (thank you @Jaffacakelover)
Add support for using a local file path for the netplay server list URL
Swap Z-Trigger and Start UI elements in RMG-Input

Download: RMG v0.7.8
Source:Here