must

by barlog

17 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,759 reviews

2,541,400 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...

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,461 reviews

2,251,211 users

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 941 reviews

1,335,588 users

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

Web Developer by chrispederick

Rated 5 out of 5 stars 203 reviews

637,771 users

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

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,482 reviews

1,009,875 users

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

FireGestures by Gomita

Rated 4 out of 5 stars 853 reviews

414,875 users

A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 153 reviews

189,302 users

View HTTP headers of a page and while browsing.

YSlow by YSlow

Rated 3 out of 5 stars 180 reviews

123,075 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.

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 28 reviews

26,118 users

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

Yet Another Smooth Scrolling by kataho.

Rated 4 out of 5 stars 364 reviews

28,536 users

Extends smooth scroll more tweakable. By keyboard scroll also supported.

Gmail Manager by Todd Long

Download Now

Experimental

Rated 4 out of 5 stars 1,339 reviews

162,845 users

The original Gmail notifier for multiple accounts. Allows you to receive new mail notifications along with viewing account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets.

Silvermel by ShareBird

Rated 5 out of 5 stars 570 reviews

64,498 users

A Creamy Silvery Experience

Server Spy by Christophe Jacquet

Rated 4 out of 5 stars 15 reviews

8,185 users

Server Spy indicates what brand of HTTP server (e.g. Apache, IIS, etc.) runs on the visited sites.

MacOSX Theme by promatik

Rated 4 out of 5 stars 104 reviews

4,061 users

MacOSX theme for Firefox 3.6

Smart Bookmarks Bar by Remy Juteau

Rated 4 out of 5 stars 486 reviews

5,893 users

Note from Mozilla: This add-on has been discontinued. Try Roomy Bookmarks Toolbar instead.
  1. 1
  2. 2
Results 115 of 17

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