SameBoy is a very user friendly and accurate GameBoy emulator for Mac OS. Changelog.
A new version of the quite young Nintendo Game Boy and Game Boy Color emulator Gearboy has been released
PyBoy is a Gameboy emulator written in Python.
A new version of the Game Boy emulator zBoy has been released. zBoy is available for Windows and Linux.
SameBoy is a very user friendly and accurate GameBoy emulator for Mac OS.
binjgb is a simple Game Boy/Game Boy Color emulator.
LuaGB is a fully functional Gameboy (Color) emulator written in pure Lua.
GB Enhanced+ is a DMG/GBC/GBA emulator and experimental NDS emulator. It is the successor to the original GB Enhanced project with a focus on enhancements and emulating as much of the Game Boy as possible.
VGB is a free Game Boy emulator for Windows and Linux and has been updated.
GameBoo is a GameBoy emulator written in C++/C/SFML/SDL. The emulator can run the majority of GB games.