BizHawk is a multi-system emulator written in C#
Cemu is a Wii U emulator
Dolphin is a GameCube / Wii emulator
Flycast is a multiplatform Sega Dreamcast, Naomi, Naomi 2
A web based N64 Emulator
Compatibility tool for Steam Play based on Wine
PlayStation 3 emulator and debugger
Emulator for the Game Boy, Game Boy Color, and Game Boy Advance
Experimental C# Playstation Emulator
HLE 3DS emulator
A JavaScript NES emulator
A cross platform, customizable graphical frontend
Emulator that can run 32-bit Windows programs/games
Minimal scripts to run the emulator in a container for various systems
An NES emulator in C++
The RISC-V Virtual Machine
Qt-based Nintendo Entertaiment System emulator and NSF/NSF2/NSFe Music
Python front end for MAME that can run in Linux, Windows, and MacOS
A gameboy emulator that only plays Pokemon Blue, in ~50 lines of c++.
NES emulator written in Go
An Emscripten port of DOSBox
ESP32 Display Controller (VGA, PAL/NTSC Color Composite, SSD1306, ST77
A work-in-progress PlayStation 4 emulator
Emulator of the ancient 8 bit microprocessor SC/MP 2