nwire is a new eclipse for extension, and it allows you to  explore your code.  When I say explore , I really mean explore. It’s not a static stuff where you watch a diagram.  More about this in the youtube presentations .

This is a must have extension for devs who do a lot of refactoring , as you can see everything , including what uses or changes a variable , which in softwares like wordpress is a bless. Some pics bellow.