Not to push the issue, but Go's standard libraries are fairly decent for being minimal and are dead simple to use. The docs have a good mix of examples and quickly parseable information.
I'm extremely happy with nsf's gocode [1] adding auto-complete support to Sublime Text and Vim. It's quite nice. Go, itself (from `hg`), has syntax support for vim and (I think) an emacs plugin. There's also a Goclipse modified Eclipse install which I don't know much of anything about.
There are others, [2]
I mean, there certainly isn't a complete equivalence of Eclipse for Go (yet?).
