Add-On Development

by sugsugat

26 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,759 reviews

2,583,853 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 203 reviews

650,732 users

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

SQLite Manager by lazierthanthou

Rated 5 out of 5 stars 30 reviews

210,024 users

Manage any SQLite database on your computer.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 327 reviews

164,677 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

YSlow by YSlow

Rated 3 out of 5 stars 180 reviews

125,417 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 159 reviews

106,800 users

An HTTP analyzer addon for Firefox

JSONView by Ben Hollis

Rated 5 out of 5 stars 125 reviews

99,053 users

View JSON documents in the browser.

Quick Locale Switcher by ppclick

Rated 3 out of 5 stars 81 reviews

244,256 users

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

RefControl by James Abbatiello

Rated 4 out of 5 stars 175 reviews

85,739 users

Control what gets sent as the HTTP Referer on a per-site basis.

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 59 reviews

149,432 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.

FireQuery by BinaryAge, Jan Odvarko

Rated 4 out of 5 stars 50 reviews

38,925 users

Firebug plugin for jQuery development

NoRedirect by Kai Liu

Rated 4 out of 5 stars 48 reviews

12,241 users

NoRedirect lets the user take control of HTTP redirects. It can be used to interdict an ISP's DNS search redirection hijacks, preview/screen "shortened" URLs (e.g., TinyURL), stop the annoying redirection of "smart" error pages, etc.

View Source Chart by Jennifer Madden

Rated 5 out of 5 stars 103 reviews

17,815 users

Inspect the DOM at lightning speed.

Firecookie by Jan Odvarko

Rated 4 out of 5 stars 61 reviews

5,515 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

Execute JS by Rudolf Noe

Rated 5 out of 5 stars 13 reviews

6,415 users

Execute JS is a enhanced JavaScript-Console, where you can comfortably enter and execute arbitrary JavaScript-Code and modify functions...
  1. 1
  2. 2
Results 115 of 26

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