VisualBoyAdvance (commonly abbreviated as VBA) is a free emulator of the Game Boy, Game Boy Color, and Game Boy Advance handheld game consoles.

MAME (Multiple Arcade Machine Emulator) is a free and open source emulator designed to recreate the hardware of arcade game systems in software.

Multi Emulator Super System (MESS) is an emulator for many game consoles and computer systems.

PCSX2 is a free and open-source PlayStation 2 emulator for Windows, Linux and Mac OS.

Kega Fusion (Fusion, initially named Kega II) is a Sega Mega Drive/Genesis emulator.