LiteIDE is a simple, open source, cross-platform Go IDE.
Ranked in these QuestionsQuestion Ranking
Pro Fast start-up
LiteIDE starts up really fast on Linux and Windows (could not test it on MAC OS)
Pro Golang centric
LiteIDE is focused on Golang development and therefore provides a nice set of related features out of the box.
Con Limited extensibility
The number of available plugins is limited. As far as I know, plugins need to be written in C++ which could be somewhat of a barrier for third party developers with the need to extend the core product.