Visual Boy Advance (VBA) is an Open Source GBA emulator used to play Nintendo Game Boy, Game Boy Color, and Game Boy Advance games on a personal computer system. Released in 2004, it quickly gained popularity and became one of the most widely used Game Boy emulators for Windows.
RetroArch is a free and open-source emulator software that allows users to play their favorite games from various classic gaming consoles and platforms on modern devices. It is available for a wide range of platforms, including Windows, Mac, Linux, Android, iOS, and many game consoles.
MAME - Multiple Arcade Machine Emulator is a Free Arcade Game Emulator. This arcade emulation software absorbed its sister project which was previously known as MESS (Multi Emulator Super System).
Jnes is an old school (NES) Nintendo Entertainment System Emulator that can be run from a portable device such as a USB flash drive. The NES emulation software also includes an advanced database of "Pro Action Replay" and "Game Genie" cheat codes.
DOSBox is a portable DOS emulator or Portable DOSBox that can be used to run many old DOS games or applications that cannot be run on a modern Windows Operating System. It is great to use for those old DOS software applications or games you may have sitting around collecting dust.