Developer Pack

by towa48

3 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,773 reviews

2,248,153 users

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 246 reviews

367,269 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Web Developer by chrispederick

Rated 5 out of 5 stars 213 reviews

537,921 users

The Web Developer extension adds various web developer tools to the browser.

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections

Recently Viewed