Multi Emulator Super System (MESS) is an emulator for many game consoles and computer systems. Developed by Miodrag Milanovic
License: Free Personal
Apps available for Mac OS X Windows Linux
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. Developed by Alec Lofquist
License: Open Source
Apps available for Windows Linux Raspberry Pi