Retropie - RetroPie allows you to turn your Raspberry Pi or PC into a retro-gaming machine.

LaunchBox - LaunchBox is a portable, box-art-based games database and launcher for DOSBox, emulators, arcade cabinets, and PC Games. Download it free!

GameEx - GameEx is considered to be the most powerful and feature rich front-end for MAME, GameBase, Daphne, PC Games and all command line based game emulators, along with being a complete Home Theatre PC solution.

RetroBat - RETROBAT RetroBat is a software distribution designed for emulation and to be the easiest way to enjoy your game collection on your Windows computer.

GamersGate - Buy and download games instantly for PC and Mac.

Batocera.linux - Batocera.linux is an open-source and completely free retro-gaming distribution that can be copied to a USB stick or an SD card with the aim of turning any computer/nano computer into a gaming console during a game or permanently.