My Favorite Add-ons

by bcmoney

12 Add-ons in this Collection

Video DownloadHelper by mig

Rated 4 out of 5 stars 11,381 reviews

3,600,483 users

The easy way to download and convert Web videos from hundreds of YouTube-like sites.

Greasemonkey by Anthony Lieuallen

Rated 4 out of 5 stars 1,544 reviews

725,128 users

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

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,587 reviews

999,898 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...

Selenium IDE by Jason Huggins, Adam Goucher, others

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Rated 4 out of 5 stars 215 reviews

100,041 users

Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests.

Web Developer by chrispederick

Rated 4 out of 5 stars 461 reviews

292,525 users

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

Web of Trust, MyWOT/WOT: Website Reputation Rating by WOT Services

Rated 4 out of 5 stars 1,496 reviews

277,670 users

Instantly know which websites to trust! WOT protects you while you browse, warning you against dangerous sites that host malware, phishing, and more.

Cookies Manager+ by V@no

Rated 5 out of 5 stars 95 reviews

75,485 users

Cookies manager to view, edit and create new cookies. It also shows extra information about cookies, allows edit multiple cookies at once and backup/restore them.

rikaichan by ffjon

Rated 5 out of 5 stars 135 reviews

27,689 users

Japanese to English/German/French/Russian dictionary. Just hover the mouse on top of a word, and a popup appears. Automatically de-inflects verbs and adjectives. Detailed kanji view...

SkipScreen -- download helper, now for sale... by Skipscreen

Rated 4 out of 5 stars 610 reviews

27,756 users

We’re sorry to say we can’t maintain Skipscreen anymore. We’d love to see someone carry on with it. If you’d like to buy Skipscreen, or otherwise find it a good home, please contact us at

Firefogg by Firefogg

Rated 5 out of 5 stars 4 reviews

4,352 users

Video encoding for Firefox.
Firefogg allows you to encode video for the web, you can create Ogg Theora and WebM videos.

Characterizer: Japanese and Chinese Reinforcement by Kanjilish

Rated 5 out of 5 stars 56 reviews

313 users

Characterizer allows you to practice Japanese or Chinese characters while you read English (or other languages) by replacing the first letter (or entire word) with a character. For example, the word read might appear as 読ead.

Semantic Radar by CaptSolo (Uldis Bojārs), Sergio Fernández

Rated 5 out of 5 stars 4 reviews

179 users

Displays a status bar icon to indicate presence of Semantic Web (RDF) data in the web page. Click the icon to explore this information in more detail...

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