Firefox Extension Development Addons

by Erik Vold

35 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,623 reviews

2,922,220 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...

Web Developer by chrispederick

Rated 5 out of 5 stars 178 reviews

782,775 users

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

SQLite Manager by lazierthanthou

Rated 5 out of 5 stars 52 reviews

213,350 users

Manage any SQLite database on your computer.

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 282 reviews

314,446 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

Session Manager by Michael Kraft

Rated 4 out of 5 stars 420 reviews

269,120 users

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

RESTClient, a debugger for RESTful web services. by Chao ZHOU

Rated 4 out of 5 stars 67 reviews

102,307 users

Notice: some important features (XML indentation and load old saved requests) are missing in version 2.0.0, please update to version 2.0.1.

Please follow the link ("View other versions") below To install version 2.0.1.

Extended Statusbar by Strahinja Kustudić

Rated 4 out of 5 stars 214 reviews

81,222 users

A Statusbar with speed, percentage, time and loaded size (similar to Opera's one)

Quick Locale Switcher by ppclick

Rated 4 out of 5 stars 68 reviews

335,809 users

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Rainbow Color Tools by Heather Arthur

Rated 5 out of 5 stars 81 reviews

50,307 users

Color tools for web development.

Color picker and eyedropper + saving colors and trying out colors with drag and drop.

Add-on Compatibility Reporter by Mozilla

Help make Firefox better. The Add-on Compatibility Reporter enables you to report if the Firefox add-ons that you're using are working properly.

Restartless Restart by Erik Vold

Rated 5 out of 5 stars 122 reviews

46,178 users

This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart FIrefox or Seamonkey.

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 53 reviews

159,033 users

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.

XPath Checker by Brian Slesinsky

Rated 5 out of 5 stars 16 reviews

24,690 users

An interactive editor for XPath expressions.

User Agent RG by justin Ƨullivan

Rated 3 out of 5 stars 25 reviews

12,951 users

A really generic user agent switcher, no restart required.

Firecookie by Jan Odvarko

Rated 4 out of 5 stars 57 reviews

8,668 users

Firecookie is an extension for Firebug that makes possible to view and manage cookies in your browser

Firecookie is part of Firebug since Firebug 1.10
  1. 1
  2. 2
  3. 3
Results 115 of 35

What are Collections?

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

Explore Collections

More by this User

See all collections by this user

Recently Viewed