Web Development

by c2theg

16 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,793 reviews

2,285,369 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 251 reviews

372,988 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 217 reviews

567,444 users

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

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 934 reviews

562,170 users

FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.

Check out my new project, FireSSH!

SeoQuake SEO extension by SeoQuake Team

Rated 4 out of 5 stars 207 reviews

84,512 users

Seoquake is a Firefox SEO extension aimed primarily at helping web masters who deal with search engine optimization (SEO), social media optimization (SMO) and internet promotion. Seoquake allows to investigate many important SEO parameters.

YSlow by YSlow

Rated 3 out of 5 stars 195 reviews

101,106 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.

FirePHP by cadorn

Rated 4 out of 5 stars 46 reviews

51,823 users

FirePHP enables you to log to your Firebug Console using a simple PHP method call.

Not using Firebug 1.9+ on Firefox 8+? See http://firephp.org/

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 65 reviews

140,895 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.

CodeBurner for Firebug by SitePoint

Rated 3 out of 5 stars 34 reviews

34,612 users

CodeBurner is a Firefox add-on that integrates with Firebug, to extend it with reference material for HTML and CSS.

SEO Doctor by vprelovac

Rated 4 out of 5 stars 72 reviews

18,134 users

SEO Doctor allows easy SEO diagnosis and problem solving for webmasters.

CSS Usage by Teun van Eijsden

Rated 4 out of 5 stars 38 reviews

22,071 users

Firebug extension to view which CSS rules are actually used.

FireQuery by BinaryAge, Jan Odvarko

Rated 4 out of 5 stars 52 reviews

31,345 users

Firebug plugin for jQuery development

Firecookie by Jan Odvarko

Rated 4 out of 5 stars 61 reviews

4,609 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

SenSEO by Nico Steiner

Rated 4 out of 5 stars 41 reviews

7,001 users

SenSEO is an extension checking the most important on-page-SEO-criteria and calculating a grade of how good your site fulfills these criteria.

Foxy SEO Tool by McNulty

Rated 5 out of 5 stars 19 reviews

4,312 users

Foxy SEO Tool offers tools for search engine optimization (SEO), web traffic and page analysis for webmasters and web professionals.
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