I was taking a look on Go language, but I want to know if there is any IDE developed only for it, but that have a GUI design feature, as Visual Studio and Netbeans.
You can also find an Eclipse plugin here: http://code.google.com/p/goclipse/
However, at the moment of writing this is still at an early development stage.
Go isn't really designed for GUIs - it's precisely designed to meet the kind of needs that Google has.
I dare say it's entirely possible to develop GUI frameworks with/in it, but it's not the team's priority as far as I'm aware.
I believe the best options for developing Go are TextWrangler, Vim, or BBedit.
I've been using gedit with C syntax highlighting selected and bash shell for compiling and testing. I keep the Linux version of Google Chrome browser running local copy of Go documentation. Under Xubuntu window manager I can flip the browser window up and down out of the title bar for whenever I need to look at package APIs.
Go compiles and links very fast - I'm just as productive with this set of tools as I've ever been using Java and C# IDEs. Kind of refreshing to write software with just "stone knives and bear skins".
Most of the main Go developers use Acme A programming environment by Rob Pike, it is very different from a traditional IDE, but if you are open-minded and get over the first shock, it can be extremely pleasant to use.
You can also use Notepad++ for now, there is a language file for it here: http://go-lang.cat-v.org/text-editors/notepad-plus-plus/
Use Cloud-IDE.com online editor and online deploy - All FREE !!
lite ide is little, cross platform and open source.you can try it. http://code.google.com/p/golangide/
For my Go programming I use the Zeus editor. It's definitely NOT a Go GUI IDE but at least for me the gocode auto complete feature is great.