Bloodlust Software
http://nesticle.parodius.com

—Overview—
NESticle is a freeware NES emulator for DOS/Windows95. I really love it. Runs fast in DOS mode on my Pentium 60 with 16 megs RAM. It's even nice and smooth in the Windows 95 version, which requires DirectX 3.0.

—File Types—
Opens ROMs with the .NES extension only.

—Graphics—
NESticle lets you save your game at any point. You are given 10 "saved state" slots per ROM. Press F9 for an instant PCX screen shot, which is automatically given a unique filename so your screen shots don't overwrite each other. You can even have NESticle record a movie of your game that you can watch again at anytime. These movies are not too rough on the ol' hard drive at 7K/minute (!).

—Sound—
The sound is quite accurate. There is an option to log wave output to a WAV file (16-bit, Mono, 22,050 Hz sample rate).

—Problems—
I didn't encounter any... although some ROMs aren't graphically perfect (i.e. Mike Tyson's Punch Out!!). I would like to see future versions support the NES Zapper, Power Pad, and Power Glove :)

—More Stuff—
Other cool features include Game Genie codes support (yay) and joystick support. Modem play is supported, but still buggy. It works, but only if both players own the same exact ROM with the same exact filename.

-Deezer, 98.01.02