My Favorite Add-ons

by kaelifa

21 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,650 reviews

2,865,909 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 868 reviews

1,616,092 users

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

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,403 reviews

1,587,661 users

The first and only download manager/accelerator built inside Firefox!

iMacros for Firefox by iOpus

Rated 4 out of 5 stars 342 reviews

295,865 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...

Web Developer by chrispederick

Rated 5 out of 5 stars 183 reviews

746,665 users

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

Awesome Screenshot Plus - Capture, Annotate & More by Diigo Inc.

Rated 4 out of 5 stars 883 reviews

205,082 users

Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!

SQLite Manager by lazierthanthou

Rated 5 out of 5 stars 57 reviews

215,126 users

Manage any SQLite database on your computer.

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 284 reviews

311,927 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 305 reviews

174,534 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 167 reviews

147,780 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.

ShowIP by ShowIP Dev Team

Download Now

Experimental

Rated 3 out of 5 stars 213 reviews

87,884 users

Show the IP address(es) of the current page in the status bar. It also allows querying custom information services by IP (right click) and hostname (left click), like whois, netcraft, etc. Additionally you can copy the IP address to the clipboard.

FireQuery by BinaryAge

Rated 4 out of 5 stars 43 reviews

49,484 users

Firebug plugin for jQuery development

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 26 reviews

31,260 users

Finds HTML elements matching chosen CSS selector(s) or XPath expression

Clear Cache Button by Chris Holtz

Rated 4 out of 5 stars 111 reviews

34,549 users

Adds a clear cache toolbar button. After installing the extension, find the clear cache button in the toolbar customization...

Firediff by kpdecker

Rated 4 out of 5 stars 12 reviews

29,376 users

Track Changes in Firebug
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