Ergonats is a set of server processes and miscellaneous tools that make it easy to build ergo-based NATS applications.
Ergo provides an Erlang/OTP-style supervision hierarchy to Go applications. It's even binary-compatible with existing Erlang/Elixir clusters over the network. If you find yourself constantly creating goroutines that have an infinite for loop which in turn has a select in it, then you're already in a place where you can realize the benefit of Ergo.
To get a good idea for the inspiration behind Ergo, you might want to read Elixir's GenServer documentation, or you can read the Erlang documentation on OTP.
Ergonats contains some general purpose NATS-related servers like the PullConsumer as well as a complete event sourcing library built on top of Ergo.