SkyEmu

SkyEmu is a low-level emulator for the Game Boy, Game Boy Color, Game Boy Advance and Nintendo DS, created by Skyler Saleh and released under the MIT licence. It aims to balance accuracy, performance, features and ease of use.

Its Game Boy Advance emulation is the most accurate part. It renders per pixel, emulates the full instruction pipeline and prefetch, passes the AGS aging test ROM and runs difficult games such as the Classic NES Series and Golden Sun. Game Boy and Game Boy Color emulation is less accurate, and DS emulation is described as beta quality.

Features include upscaling shaders and colour correction, save states, fast forward and rewind, Action Replay cheats, debuggers and an HTTP interface for scripting. It bundles open source BIOS replacements, though official dumps are recommended. Builds are available for Windows, macOS, Linux, FreeBSD, Android and iOS, and it also runs in a web browser.