I don't know if many people have heard of it, but there's actually a WebAssembly Package Manager. It's similar to crates.io, except you upload WebAssembly binaries written in any language instead of Rust source code!
At Hammer of the Gods, we've been using it to manage our WebAssembly modules for the past 4 or 5 months with great success. To give back, we've published the internal tool we created to make releasing Rust on WAPM seamless: