DOM Inspector is a Firefox addon, can inspect the structure and properties of a window and its contents, inspect and edit the live DOM of any web document or XUL application. The DOM hierarchy can be navigated using a two-paned window that allows for a variety of different views on the document and all nodes within.

Requirements:
* Firefox
* Thunderbird
* SeaMonkey
* Sunbird
* Mobile

The license of this software is Free, you can free download and free use this browser plug-ins software.