RetroFab is described as 'Online collection of 3D simulations of vintage electronic games that can be played in your browser' and is an game in the games category. There are more than 50 games similar to RetroFab for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best RetroFab alternative is RetroArch, which is both free and Open Source. Other RetroFab like games are DuckStation, Lemuroid, Super ZSNES and OpenEmu.
Citra is an experimental open-source Nintendo 3DS emulator/debugger written in C++. It is written with portability in mind, with builds actively maintained for Windows, Linux and macOS.
BizHawk is a multi-system emulator designed predominantly around the production of Tool Assisted Speedruns (TAS). BizHawk focuses on core accuracy and power user tools while still being an easy-to-use emulator for casual gaming.
United States
Supermodel emulates Sega's Model 3 arcade platform, allowing you to play a number of ground-breaking arcade classics on your PC. It uses OpenGL and the SDL library, and can run on Windows, Linux, and Mac OS X.
nds4droid is a free, open source Nintendo DS emulator written for Android smartphones. It is based off of the excellent emulator DeSmuME. The source code can be found on sourceforge.
