I wrote a Forth interpreter for WASM some time ago: https://github.com/stefano/wasm-forth https://github.com/stefano/wasm-forth It's not production ready and i

I wrote a Forth interpreter for WASM some time ago: https://github.com/stefano/wasm-forth https://github.com/stefano/wasm-forth It's not production ready and it's missing a good JS interface, but you can use it to run Forth code in the browser with a basic console interface.