Yea, I wrote both. Go Micro was the first thing I open sourced in 2015. Eventually I moved on to building Micro, for a number of years both projects were in the same github org and worked together. After about 6 years I could see a split in the user base but also my own usage. People adopting Go Micro were those who wanted to plugin their own infrastructure and tools, whereas I wanted a more complete platform experience with Micro.