via http://www.emucr.com/

puNES v0.62 is released. puNES is a NES emulator. Currently the program supports mappers 0, MMC1, UNROM, CNROM, and the sound is available. It uses the SDL libraries and it works on both Linux and Windows.

puNES v0.62 Changelog

Rewritten from scratch the OpenGL stack. Added new rendering mode "OpenGL GLSL" that use shaders for all filters (except for NTSC and HQ3x), of course if video card and its driver support it. In GLSL mode, add more filters. Many other bugfixes.
http://dl.dropbox.com/u/21595068/punes.win32.zip