Eaglercraft is a project that ports to run natively in a web browser using WebAssembly (WASM) and JavaScript. It doesn’t require a Java plugin, a Minecraft account, or any server-side Java runtime — everything runs client-side in HTML5/JS.
The entire engine initializes via a single HTML page, making it highly portable and accessible on restricted networks (such as school or work environments where downloading external executables is blocked). Technical Implementation: How It Works Under the Hood eaglercraft 112 wasm gc
Benchmarks from community testing (Eaglercraft 1.12 pre-release vs 1.8 JS version): Eaglercraft is a project that ports to run