I'm working on something that falls into that category at the moment. Micro is a microservices toolkit written in Go that starts with a focus on development. It provides a library for discovery, client/server, routing, etc and also includes an API, CLI and Sidecar for integration of non Go apps. Future goals are to address more feature rich discovery, routing, monitoring, config and a lot more. I previously worked on the platform team at Hailo where we built a microservices platform with 200 services in production.
https://github.com/myodc/micro
Let me know your thoughts.