I'm using wasm-micro-runtime at https://www.inngest.com to transform events on the fly, to run secure templating everywhere, and (sometimes) to run custom actions.

WAMR also has the capability to run AOT compiled WASM, which is kind of ideal for the immutable, fast running wasm modules we're running.

Would love to learn more, because it seems like they have shared goals, and this is a very, very interesting subject :)