My Nes v5.0 Alpha is released. My Nes is a portable open source NES/FAMICOM emulator written in C#. It's EXACT nes cycle emulator, very accurate and uses exact ppu scanline timing. My Nes compatibility is very high, and most of the games that supported run perfectly.

My Nes Features:
- Roms browser with bility to disblay additional information of each rom like snapshot and info.
- Save/Load state in defferent 9 slots or in file using save/load state as feature.
- Sound recorder which record sound of current playing rom in wav format (Mono, 44100 Hz, pcm 16-bit).
- Developer console with full access emulation commands.
- Support INES (*.nes) file format.
- Can read from archive (*.zip, *.7z and *.rar)
- Profiles for control mapping.
- CPU :All 6502 opcodes (with the undocumented opcodes), IRQ and NMI.
- PPU :8x8 and 8x16 sprites with transparency and priority, background tiles and sprites evulation, internal ntsc palette generator, default PAL palette, Cycle based ppu, real scanline and scancycle timing, Emphasis and monochrome effects.
- Sound : all the 5 channels, MMC5, SS5B and VRC6 external sound channels. Format: MONO PCM 16 BIT 44100 Hz.
- Systems : PAL , NTSC
- Mappers : # 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 32, 33, 34, 40, 41, 42, 43, 44, 45, 46, 47,48, 49, 50, 51, 57, 58, 60, 61, 62, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 82, 83, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 97, 105, 112, 113, 114, 115, 117, 118, 119, 133, 140, 142,159, 180, 182, 184, 185, 187, 188, 189, 193, 200, 201, 202,203,204,205, 212,213, 225, 226, 228, 229, 230, 231, 232, 233, 240, 241, 242, 243, 244, 245, 246, 248, 249, 251 and 255. Almost full set !!

My Nes v5.0 Alpha Changelog:
* Rewriten the emulator code and the old code replaced with optimized one.
* Cpu improved to work on instruction-clock based mode (each operation in instruction will
clock components instead of waiting the instruction to complete before clock the instruction cycles).
* Added interrupt vector interrupting behavior in cpu.
* Added interrupt check before the last cycle behavior in cpu.
* Improved ppu to do exact pixel timing.
* Fixed DMC sound channel.
* Added undocumented dma unit emulation.
* Added Dendy system.
* Added Turbo buttons support.
* Changed user interface to make the main window as browser.
* Added abiblity to change renderer.
* Added emulation shortcuts so that user can change shortcut keys like Save State button.

Download: My Nes v5.0 Alpha x86
Source: Here