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 1,793 reviews

2,459,551 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 959 reviews

1,304,833 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 382 reviews

452,314 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...

Stylish by Jason Barnabe

Rated 4 out of 5 stars 754 reviews

695,155 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.

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 251 reviews

392,381 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

604,961 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 343 reviews

307,529 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 934 reviews

593,292 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 305 reviews

321,314 users

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

Tiny JavaScript Debugger by Patrick Brunschwig

Rated 4 out of 5 stars 5 reviews

37,957 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.

YSlow by YSlow

Rated 3 out of 5 stars 195 reviews

108,799 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.

Rainbow Color Tools by Heather Arthur

Rated 5 out of 5 stars 94 reviews

36,778 users

Color tools for web development.

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

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