puNES v0.48 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 v0.48 Changelog

More accurate Zapper emulation (thx tepples). Right button of mouse emulates the pointing of the Zapper outside the TV screen. So, to make a shoot offscreen, you must press the left mouse button while holding down the right. Added Bilinear filter. Rearranged the menu filter (Hint: reselect the desired filter and then save the configuration). Fixed many bugs in opengl codes (now, on fullscreen, aspect ratio is maintained properly).

Download: puNES v0.48 for Linux32
Download: puNES v0.48 for Linux64
Download: puNES v0.48 for win32
Source: Here