Nintendo NES
Info: The Nintendo NES was released in Japan in 1983 and was Nintendos first proper home console, over its life time it boasted library of over 2000 games, and in 2009 was voted the best console ever released, trashing all its successors and competitors, It featured an 8-bit single-core processor clocked at 1.79MHz, 16kb RAM and 16kb dedicated video memory, but dont let its specs fool you, This was voted best console ever for a reason, It played host to games such as the legendary "Super Mario Bros.", "Metroid" and the first ever "Legend of Zelda", go on and grab an emulator, you wont regret it!
Windows
Jnes v1.1 / 431kb / Rated: 10.0/10 / DOWNLOAD: WIN
perhaps undeniably the best nes emulator out there, developed by jabo it incorpates great video plugins and is a sure choice for all emu fans.
Nestopia v1.40 / 1.2mb / Rated: 9.5/10 / DOWNLOAD: WIN / MAC / LIN
Nestopia is a top notch NES emulator, and is undoubtably up there with Jnes, where it lacks in the video department slightly it makes up for compatibility as it is compatible with even more games than Jnes, however Jnes has a better video plugin
VirtuaNES v0.97e / 374kb / Rated: 9.5/10 / DOWNLOAD: WIN
Again another top notch NES emulator, of Japanese origin. It is capable of emulating a vast majority of games, much the same as Nestopia however more colorful.
FCEUX v2.2.0 / 2.6mb / Rated: 9.0/10 / DOWNLOAD: WIN / LIN
FCEUX is an open sourse NES emulator for Windows and Linux, It is capable emulating the NES up to 95%, Its only problem is it sufers on occasion with choppy graphics which can get really annoying.
RockNES v5.13d / 1.5mb / Rated: 9.0/10 / DOWNLOAD: WIN
Im getting tired of saying it but, yet ANOTHER GREAT NES emu.
Nesticle v0.42 / 330kb / Rated: 8.0/10 / DOWNLOAD: WIN
Nesticle is avery old NES emulator thats last release occoured in 1998, but despite its age it is relatively good NES emulator that will run on a Pentium 133MHz.