About this Collection
8 Add-ons in this Collection
Firebug by Joe Hewitt, Jan Odvarko, others
The Web Developer extension adds various web developer tools to the browser.
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
The ultimate "Hosts File" editor for Mozilla Firefox!
Change Hosts is a complete Hosts File editor, commonly used by developers to force a domain name resolution to a specific IP.
What are Collections?
Collections are groups of related add-ons that anyone can create and share.Explore Collections