melonDS aims at providing fast and accurate Nintendo DS emulation. While it is still a work in progress, it has a pretty solid set of features:

Nearly complete core (CPU, video, audio, ...)
OpenGL renderer, 3D upscaling
RTC, microphone, lid close/open
Joystick support
Savestates
Various display position/sizing/rotation modes
(WIP) Wifi: local multiplayer, online connectivity
and more are planned!

fix GL renderer not working at all on certain setups (RSDuck)
add 32bit writes to certain IO ports (fixes some freezes)
OpenGL: disable vsync under Windows
fix bug when mapping a joystick axis but no button
set kMaxIterationCycles to 64 (old value 16)
fix potential crash when pressing Escape with menus opened
OpenGL: remove $#@!ty hack
OpenGL: better lines
fix potential crash when closing emu


http://melonds.kuribo64.net/downloads.php

http://www.emulation64.com/view/2987...-082-released/