OpenEmu!

What is RetroArch?RetroArch is a modular multi-system emulator system that is designed to be fast, lightweight, and portable. It has features few other emulators frontends have, such as real-time rewinding and game-aware shading.

VisualBoyAdvance (VBA) is a free software (GNU GPL) emulator targeted for the Game Boy, Super Game Boy, Game Boy Color, and Game Boy Advance handheld game consoles sold by Nintendo.

ePSXe (enhanced PSX emulator) is an emulator of the PlayStation video game console for x86-based PC hardware. ePSXe makes use of a plugin system to emulate GPU, SPU, and CD drive functions, similar to the model first introduced in PSEmu Pro.

Dolphin is a Gamecube and Wii emulator. Most games run perfectly or with minor bugs. Games are playable at HD quality. This is a remarkable feature the actual Gamecube and Wii consoles are not capable of. As an open source project everyone can commit improvements. The code is hosted on GitHub. Dolphin is actively developed and almost every day new features are added and bugs fixed as well.

EmulationStation is a graphical and themeable emulator front-end that allows you to access all your favorite games in one place, even without a keyboard!

higan was formerly known as bsnes. The project was renamed after becoming a multi-system emulator.

Lutris is an open source gaming platform for GNU/Linux. It allows you to gather and manage (install, configure and launch) all your games acquired from any source, in a single interface.

mGBA is a new Game Boy Advance emulator written in C.

Mednafen is a portable, utilizing OpenGL and SDL, argument(command-line)-driven multi-system emulator with many advanced features. The Atari Lynx, GameBoy (Color), GameBoy Advance, NES, PC Engine (TurboGrafx 16), SuperGrafx, Neo Geo Pocket (Color), PC-FX, and WonderSwan (Color) are emulated. Mednafen has the ability to remap hotkey functions and virtual system inputs to a keyboard, a joystick, or both simultaneously. Save states are supported, as is real-time game rewinding. Screen snapshots may be taken at the press of a button, and are saved in the popular PNG file format. »

The number one Game Boy Advance emulator for iOS is back, and has been rewritten from the ground up for iOS 7.

PCSX-Reloaded is a PlayStation Emulator based on PCSX-df 1.9, with support for Windows, GNU/Linux and Mac OS X as well as many bugfixes and improvements.

PSX is an emulator of the PlayStation video game console for x86-based PC hardware. It is Windows and Linux compatible. The original game CDs can be used to play the games. ISO files are also supported. Graphics quality may be dependent on the power of the hardware.