GnuBoy r136m is released. GnuBoy(all lowercase, but sometimes unofficially spelled GNU Boy) is a Free Software emulator released under the terms of the GNU General Public License ("GPL"). It is 99% execution-compatible with software targeted for the Game Boy ("DMG") and Game Boy Color ("CGB") handheld game consoles sold by Nintendo. It is not compatible with Super Game Boy-specific features or with Game Boy Advance, though it can run Super Game Boy games in DMG or CGB mode.

GnuBoy SVN Changelog:
r131
Really fixed path style for Dingoo native.
r132
Added code for hardware volume control, i.e. set hardware volume from gnuboy
provided pcm_volume() is implemented. Right now this is an optional interface
(and unused, Oh Boy is about to make use of it).
r133
Clean up initialized variables, added (internal) debug options.
r134
Edited wiki page Ports through web user interface.
r135
Edited wiki page OtherEmulators through web user interface.
r136
Dingoo.SIM notes added.

Download: GnuBoy r136m
Source: Here