Mesen v0.9.1 is released. Mesen is a NES/Famicom emulator and NSF player. It is still a work in progress - some features are currently incomplete or may change in future versions.

Mesen Features:
* High Accuracy - A lot of effort has gone into making Mesen as accurate as possible
* Stand-alone - Put the Mesen application into any folder and run it from there
* Supports: Save States, Movie/Audio Recording, Screenshots, Cheat Codes
* Supported Mapper List (130+): 0 to 13, 15 to 19, 21 to 27, 32 to 34, 37, 38, 44, 45, 47, 49, 52, 57, 58, 60 to 62, 64 to 80, 82, 85 to 89, 91 to 95, 97, 99, 101, 107, 112, 113, 115, 118, 119, 137 to 141, 143 to 157, 159, 163, 164, 176, 180, 184, 185, 189, 191 to 195, 200 to 203, 205 to 207, 210, 218, 225 to 228, 230 to 232, 240 to 243, 246
* NES and Famicom (including Famicom Disk System) support. Also supports: NSF, NSFe, VS System
* Net Play - Play online with friends
* Automatic updates - Mesen is able to check for updates and automatically install new versions of itself.
* Built-in Debugger
* Other Features: 7z/zip archive support, numerous　video filters (xBRZ, Scale2x, NTSC, etc.), sound recorder, sound effects, etc.

Mesen v0.9.1 Changelog:
New Features
* HD Packs: Improved support for HDNes' HD packs and added an HD Pack Builder tool.
* Debugger: Added several new features and options (Step Back, configure input, etc.)
* Video: Added option to automatically re-enable sprite limit to reduce graphical glitches caused by the "remove sprite limit" option.
* VS System: The custom color palette can now be applied to VS System games as well.
Bug Fixes
* Overclocking: Bug fixes and improved compatibility.
* Cheats: Fixed issue with 8-character Game Genie codes.
* FDS: Fixed a crash, an issue with automatic disk insertion and improved emulation compatibility.
* NSF: Fixed issue with MMC5 multiplication register (fixes Just Breed NSF).
* Others fixes and improvements for the debugger, game selection screen, rewinding, mappers 48/163, a number of unlicensed games and more.

Download: Mesen v0.9.1
Source:Here