RMG v0.2.5 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 incorrect controller being selected in RMG-Input when having 2 controllers with the same name
Fix some UI elements being enabled while the 'Controller Is Plugged In' checkbox is disabled in RMG-Input
Fix extra padding being added when having a controller selected and opening RMG-Input
Fix creating a new profile in GLideN64
Add Z-Trigger visualization in RMG-Input
Remove Debugger checkbox in the settings dialog because it did nothing
Remove About buttons in the plugin tab of the settings dialog because it did nothing
Implement close button on all dialogs
Implement custom style support (for Windows only)
Implement the ability to remove/reset the main profile in RMG-Input
Rename Interface tab in settings dialog to User Interface
Migrate to Qt6 (currently the flatpak will remain Qt5)

Download: RMG v0.2.5
Source:Here