MAME is a multi-purpose emulation framework
Emulator of x86-based machines based on PCem
BizHawk is a multi-system emulator written in C#
DOSBox Staging is a modern continuation of DOSBox
Virtualization software for x86_64 hardware
Linux distribution that transforms a computers into game consoles
DS emulator, sorta
Dolphin is a GameCube / Wii emulator
The quadplay fantasy console
C64 Emulator
A frontend for GnGeo emulator written purely in Python
A fork of snes9x-1.5
Emulator of the 8-bit computers Sharp MZ-800 / MZ-700 / MZ-1500
Qt-based Nintendo Entertaiment System emulator and NSF/NSF2/NSFe Music
NES emulator written in Go
Emulator of the ancient 8 bit microprocessor SC/MP 2
Mesen is a cross-platform (Windows & Linux) NES/Famicom emulator
AndroidAuto headunit emulator
Atari 2600, C64, Python, 3D engines and rock'n roll
DOSBox fork for embedded devices
Emulator of NES, SNES, Sega Mega Drive, GameBoy video consoles