nullDC-Naomi SVN r39 is released. nullDC-Naomi is an open source NAOMI Arcade System Emulator. It will NOT run Dreamcast games.

nullDC-Naomi SVN Changelog:
r39
drkMaple:
-. Keyboard (US) and Mouse plugin should work nicely now.
-. Warning clean up.

PuruPuru:
-. Re-added current-controller visual aid to tab names.

Also:
*. F12: Now captures the mouse. Use it once you're in-game and the menu is
hidden. Useful when using the mouse plugin, specially when playing FPS games
like Quake and Unreal.

Download: nullDC-Naomi SVN r39
Source:Here