Libretro is a simple but powerful development interface that allows for the
easy creation of emulators, games and multimedia applications that can plug
straight into any libretro-compatible frontend. This development interface is
open to others so that they can run these pluggable emulator and game cores
also in their own programs or devices.

VBA Next is a Game Boy Advance emulator based on VBA-M 2011 with backported
patches for performance and compatibility improvements.

Homepage:
https://docs.libretro.com/library/vba_next/
