daddydave Web Coder Pack
About this Collection
I'm not a web developer, but I keep a small collection of interesting web developer add-ons, you never know when you might need to debug an xpath expression!
4 Add-ons in this Collection
Firebug by Joe Hewitt, Jan Odvarko, others
The Web Developer extension adds various web developer tools to the browser.
DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.