Does anyone know if it exists an appmon similar to Erlang's, but for Golang?
Or if there's an app that can generate a flow chart for goroutines, so that it's possible to get a view of how the concurrency of a program looks like?
Not sure it's exactly what you're looking for (I have no experience with appmon), but to visualise the flow of a go program, you can use pprof. There is a great blog article that explains how to use it