by kbkt

12 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,842 reviews

2,111,219 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 1,012 reviews

1,243,533 users

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

FireGestures by Gomita

Rated 4 out of 5 stars 960 reviews

348,755 users

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

IE Tab by PCMan, yuoo2k

Rated 4 out of 5 stars 1,204 reviews

188,221 users

IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 170 reviews

143,851 users

View HTTP headers of a page and while browsing.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 358 reviews

137,325 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

SeoQuake SEO extension by SeoQuake Team

Rated 4 out of 5 stars 215 reviews

65,207 users

Accelerate your SEO efforts on the fly. SEOquake is a free plugin for browsers that provides you with key SEO metrics for a specific page, along with other useful tools such as SEO Audit and many others.

YSlow by YSlow

Rated 3 out of 5 stars 215 reviews

75,388 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.

AutoPager by Wind Li

Download Now


Rated 4 out of 5 stars 408 reviews

36,789 users

AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.

Hatena Bookmark by Hatena Co. Ltd.

Rated 4 out of 5 stars 23 reviews

10,446 users

はてなブックマーク用の公式 Firefox アドオンです。はてなブックマーク (http://b.hatena.ne.jp/) は株式会社はてなが提供する、日本国内最大のソーシャル・ブックマークサービスです。会社で見つけたサイトをオンラインにブックマーク、家に帰ってゆっくり見たいというニーズに応えると同時に、ブックマークを他のユーザーと共有し、これまでにない新しい情報体験を提供します。

ScribeFire Classic by mdrouin, Scribefire

Rated 4 out of 5 stars 165 reviews

2,454 users

ScribeFire Classic is a blog editor that integrates with Firefox and lets you easily post to your blog.

ScribeFire Classic is no longer supported; you should install ScribeFire Next: https://addons.mozilla.org/en-US/firefox/addon/scribefire-next

Clipmarks by Clipmarks

Download Now


Rated 3 out of 5 stars 92 reviews

2,690 users

Note from Mozilla: This add-on has been discontinued. Try Evernote instead.

Clipmarks lets you clip and share specific parts of articles, or anything else you read.

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections