nullDC-Naomi SVN r50 is released. nullDC-Naomi is an open source NAOMI Arcade System Emulator. It will NOT run Dreamcast games.

nullDC-Naomi SVN Changelog:
r49
Took some hacks out until proper implementation is there.
Also made the drkmapledevices plug-in compile with lglcd support by default
(make sure you have the lglcd sdk installed before trying to compile the plug-
in).
r50
forgot to take 1-2 lines out ;)

Download: nullDC-Naomi SVN r50
Source:Here