VisualBoyAdvance (commonly abbreviated as VBA) is a free emulator of the Game Boy, Game Boy Color, and Game Boy Advance handheld game consoles as well as of Super Game Boy and Super Game Boy 2.
Besides the DirectX version for the Windows platform, there is also one that is based on the free platform independent graphics library SDL. This is available for a variety of operating systems including Linux, BSD, Mac OS X, and BeOS. VisualBoyAdvance has also been ported to GameCube, Wii, webOS, and Zune HD.
VisualBoyAdvance was the most popular Game Boy emulator for Unix platforms.