EmulatorJS/EmulatorJS: A web-based frontend for RetroArch

EmulatorJS is a self-hosted JavaScript emulation library that provides a web-based frontend for RetroArch, supporting various retro gaming systems including Nintendo, Sega, Atari, PlayStation, and Commodore platforms. Version 4.0 represents a complete rewrite of the project. The library is designed as a plugin rather than a standalone website, with three versioning tiers (stable, latest, nightly) and CDN hosting available. It includes development tools, minification support, and localization capabilities. The project is open-source under GPLv3 and funded through Patreon.