Go for NetBeans

NetBeans plugin - provides syntax highlighting and code templates for Go programming language.

Installation

open Plugins dialog using Tools/Plugins menu in NetBeans IDE
select Settings page in Plugins dialog and click Add button
in Update Center Customizer dialog set
Name: Winsoft
URL: http://www.winsoft.sk/netbeans/updates.xml
select Available Plugins page in Plugins dialog and click Reload Catalog button
select Go plugin in the list, check its Install checkbox and click Install button
accept Validation Warning in NetBeans IDE Installer, that the plugin isn't signed