Web Developer's Toolbox

by Mozilla

12 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,782 reviews

2,269,188 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...

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 956 reviews

1,236,543 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

iMacros for Firefox by iMacros

Rated 4 out of 5 stars 377 reviews

414,465 users

Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the soluti...

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 248 reviews

365,459 users

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

Stylish by Jason Barnabe

Rated 4 out of 5 stars 746 reviews

662,766 users

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Orkut, and many, many other sites. You can even customize Firefox and other programs themselves.

Web Developer by chrispederick

Rated 5 out of 5 stars 216 reviews

539,803 users

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

FoxyProxy Standard by Eric H. Jung, groeg, others

Rated 4 out of 5 stars 342 reviews

292,169 users

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 930 reviews

532,621 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!

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 302 reviews

274,228 users

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

YSlow by YSlow

Rated 3 out of 5 stars 192 reviews

101,834 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.

Tiny JavaScript Debugger by Patrick Brunschwig

Rated 4 out of 5 stars 5 reviews

32,644 users

TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavaScript.

Rainbow Color Tools by Heather Arthur

Rated 5 out of 5 stars 93 reviews

35,383 users

Color tools for web development.

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

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