I feel that the URL posted by Martin Goodwell (mfornos/awesome-microservices) is a nice overview, but most project in the Go section, seem not to be frameworks specialized on microservices.

Hence, here are some, which I had a look at so far:

• micro/go-micro - part of the micro toolkit and has a powerful pluggable system. Want to use etcd over Consul as registry (used for service discovery)? Pluggable system makes it possible. The project is still maturing, but promising (at least in my eyes). Very active development right now and asim, the main contributor, is very responsive on Slack.
• NYTimes/gizmo - the microservice toolkit published by New York Times Developers. NY Times has been experimenting with go from very early on, which give their devs a few years more experience (I assume) then most of the gophers right now.
• go-kit/kit - probably the most mature microservice framework at present and has a lot of community support. There is a nice talk about go-kit, which also includes the whole motivation behind the microservice movement: