GoNES vs Nintengo

GoNES is a free, open-source NES emulator written in Go. It runs on Windows, macOS, Linux and web browsers; the browser version compiles to WebAssembly, and the project links to a hosted instance. At startup, the app opens a file picker for selecting a .nes ROM, and it can also be launched from a terminal with a ROM file argument. The project lists support for mappers 0, 1, 2, 3, 4, 7, 69 and 71, which it says cover 84.34% of official NES games. Keyboard controls for two players are configurable. Save-state, load-state and undo bindings are listed. GoNES creates a configuration file on first run, with its location documented for each desktop platform. Release downloads are provided, and macOS installation through Homebrew is documented. Source installation is also documented. Building requires OpenGL development libraries because rendering uses Ebitengine. The project says its GUI renders, but menu options still need to be added.

Nintengo is a free NES emulator written in Go. It runs .nes files directly or inside ZIP archives and supports NTSC and PAL regions. Desktop build instructions cover Mac OS X, Linux, and Windows; a WebAssembly build can run in a browser using a local web server, with Go 1.11 or higher required for WebAssembly support. Battery-backed saves use .sav files, while save states use .nst files. Two-player netplay is available through listen and connect options. The emulator can capture JPEG screenshots, record GIF video, and record WAV audio. Its controls include keyboard input, pause and stepping, reset, save and load state, and fast-forward options. Debugging features include CPU instruction decoding, CPU and memory profiling, and an HTTP service address. Listed mapper support includes NROM, MMC1, UNROM, CNROM, MMC3, ANROM, and MMC2. Audio is a work in progress, with all channels working in some capacity. The project is published under the GPL-2.0 license.