Particularly impressive is the code complete or intellisense feature built-in for Go, which is superior to all code completion features I have seen so far in other ide's (also on Linux), e.g. when opening the parameter list it shows the types of parameters to enter.
Furthermore Zeus offers code folding, a very handy feature I also haven't yet seen in other editors, a Goto Definition feature (very nice for browsing the Go source), and a whole bunch of code snippets (templates).
Zeus has the same capabilities and speed Visual Studio offers, but now Go developers have it for their favorite language!
See it in action in: http://www.youtube.com/watch?v=CZ5Yl0KnbKs&feature=youtu.be
Go check it out at: