J!Dump

Advanced printr and vardump replacer with DHTML tree display. This utility makes life easy for developers and template designers. You use it to see what's inside a variable, an array or an object. Instead of using printr or vardump, you can now use dump. This will open a popup window with a nice expandable DHTML tree, showing the contents of the variable. It will even show a list of available methods for each object. You can use dump in your extensions, in the core, in libraries and even in templates.