My Nes is a portable open source NES/FAMICOM emulator written in C#. My Nes covers thousands of nes games and close to the real nes sound and it's almost has the best apu sound core compared to other nes emulators.
http://sourceforge.net/projects/mynes/
Changes :
* Added Stereo / Mono sound support
* Bug Fixed : APU timing, length counter.
* Bug Fixed : can´t load a rom that read only or located on DVD/CD...
* Bug Fixed : error thrown when you try to save S-RAM where there´s no rom loaded.
http://sourceforge.net/projects/mynes/
Changes :
* Added Stereo / Mono sound support
* Bug Fixed : APU timing, length counter.
* Bug Fixed : can´t load a rom that read only or located on DVD/CD...
* Bug Fixed : error thrown when you try to save S-RAM where there´s no rom loaded.