(some shameless self advertising)

I built e8vm.io (https://github.com/e8vm/e8vm, https://e8vm.io), which is all written in go, and it has a full-blown compiler, with no optimizations though. The language has go-like syntax and C-like run time.

shanhu.io (https://shanhu.io) provides an online playground for the language, which runs the compiler right inside the browser, thanks to gopherjs.