NESd v0.14.0 is released. A NES Emulator written in Dart and Flutter. Supports macOS, Windows, Android and Linux (tested on Steam Deck).

Features
Runs on macOS, Linux, Windows, and Android
Cycle accurate CPU emulation
PPU and APU emulation
SRAM saves
Save states
Customizable controls with multiple bindings per action
Gamepad support
Load ROMs from file or ZIP archive
Customizable touch screen controls
Debug overlay
Debugging tools
Debugger
Execution Log

NESd changelog:
Added
Added support for Game Genie cheats (thanks @hamed-rezaee!)
Added
Added a GPU rendering mode that renders the PPU output to a texture, which should improve performance on supported systems
Added a settings toggle for rewind
Added tools and scripts for measuring performance
Added an option for the pixel aspect ratio:
Auto selects NTSC or PAL based on the game's region
NTSC (8 / 7)
PAL (11 / 8)
Square (1.0)
Stretch (unlimited, fills the screen)
Custom (select a value between 0.5 and 2.0)
Changed
Greatly improved performance across many internal components
Updated dependencies
Fixed
Fixed the game menu not having a transparent background
Fixed an issue where increasing the window size could lead to a blank page in the main menu
Fixed a bug in the noise channel leading to incorrect sounds

Download: NESd v0.14.0 x64
Download: NESd v0.14.0 Android
Source:Here