[uecker]

No idea, but according to this site: https://github.com/appcypher/awesome-wasm-runtimes there a wasm runtimes written in all kinds of languages. This does not appear to be a very challenging thing to do, but I haven't look at this closely.

[pjmlp]

Writing bytecode runtimes is a common thing since 1958 (see UNCOL), only a novelty for those selling WASM as some great invention never done before.

Only this year I started seeing WebAssembly conference talks actually acknowledging the history of bytecode based distribution.