Emulicious (2019/10/19) is released. Emulicious is a free to use multi-system Emulator for Windows, Linux, MacOS(X) and any other operating system supporting Java SE.

New features include:
SEGA Game Gear Emulation
Emulation of Master System/Game Gear Legacy Video Modes
Debugger
Palette Viewer
Tilemap Viewer
Memory Tracer
IPS Patching

http://emulicious.net/

https://www.emucr.com/2019/10/emulicious-20191019.html