sypherce

higan is a Nintendo multi-system emulator that began development on 2004-10-14. It currently supports the following systems:
Famicom
Super Famicom
Game Boy
Game Boy Color
Game Boy Advance

higan also supports the following subsystems:
Super Game Boy
BS-X Satellaview
Sufami Turbo

This is a 32bit application for Windows. RockNES is a Nintendo Entertainment System (NES) videogame emulator. It's fully coded in C and uses the Allegro library for audio, video and input devices, plus the zLib library for compressed files ZIP or GZ. Other ports are not available.

Nintendulator started out as NinthStar NES, written by David "Akilla"
De Regt. Written in C++, it was a reasonably accurate (and slow) NES
emulator which used NESten 0.61's mapper DLLs. Numerous other systems
were planned to be emulated within NinthStar (as well as complex
debuggers for each of them), but somewhere along the line, the project
was abandoned.
 
At that point, I took the existing NES sources and started improving
them. First, the PPU was rewritten to be much more accurate than
before, running cycle-by-cycle according to documentation that had been
released at the time. After that, the CPU was rewritten to execute
instructions more accurately. Then the APU was mostly completed, giving
the emulator proper sound. Somewhere along the line, it was determined
that the C++ usage in the code was very poorly done and was slowing the
program down, so I converted it to plain C and named the program
"Nintendulator".
 
The eventual goal of Nintendulator is to be *the* most accurate NES
emulator, right down to the hardware quirks. In the meanwhile, it can
certainly be used to test NES code with confidence that if it works
properly in Nintendulator, it will probably work properly on the real
hardware as well.

VirtuaNES is Famicom/NES emulator for Win32 Programmed by Norix.

Nestopia is an open source NES/Famicom emulator written in standard C++, focused on delivering as accurate emulation as possible. Development began in mid 2002, initially released for the Windows platform a year later. It has since been ported to other platforms, including Linux and Mac OS X.

Jnes is a NES emulator for Windows and Android platforms.
 
Its emulation capabilities include graphics, sound, controllers, zapper, and many memory mapping boards found in most USA games and a few popular Japanese boards adding international delight. Jnes boasts an intuitive user interface with instant saves and movie recording to making playing NES games more enjoyable. One of the coolest features is the included database of Pro-Action-Replay and Game Genie cheats, courtesy of Gent.
 
Jnes supports Kaillera for online gaming. There is also a forum at Emutalk for talking about Jnes with a larger community of users.

Nintendulator started out as NinthStar NES, written by David "Akilla"
De Regt. Written in C++, it was a reasonably accurate (and slow) NES
emulator which used NESten 0.61's mapper DLLs. Numerous other systems
were planned to be emulated within NinthStar (as well as complex
debuggers for each of them), but somewhere along the line, the project
was abandoned.
 
At that point, I took the existing NES sources and started improving
them. First, the PPU was rewritten to be much more accurate than
before, running cycle-by-cycle according to documentation that had been
released at the time. After that, the CPU was rewritten to execute
instructions more accurately. Then the APU was mostly completed, giving
the emulator proper sound. Somewhere along the line, it was determined
that the C++ usage in the code was very poorly done and was slowing the
program down, so I converted it to plain C and named the program
"Nintendulator".
 
The eventual goal of Nintendulator is to be *the* most accurate NES
emulator, right down to the hardware quirks. In the meanwhile, it can
certainly be used to test NES code with confidence that if it works
properly in Nintendulator, it will probably work properly on the real
hardware as well.