TinyGo is "a Go compiler for small places". It is a language designed specifically to work on embedded systems and WebAssembly. If you squint hard enough, you can almost imagine that WebAssembly is a form of embedded system (it's embedded in a host runtime).
One of the core tenets of wasmCloud has always been that we embrace the specification without doing anything proprietary. In other words, anyone who knows the "wasmCloud ABI" can create actors in any language that compiles to freestanding WebAssembly. While this is technically true, it's certainly a lot easier when we have an easy SDK and code generation support for a language. Using our SDKs gives you a more friendly library while helping insulate your code from changes to the underlying WebAssembly spec.
The newest language in our arsenal is TinyGo.