My Favorite Add-ons

by bcmoney

12 Add-ons in this Collection

Video DownloadHelper by mig

Rated 4 out of 5 stars 7,355 reviews

4,051,787 users

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

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,063 reviews

1,441,601 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 1,015 reviews

997,143 users

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

Selenium IDE by Jason Huggins, Adam Goucher, others

Download Now

Experimental

Rated 4 out of 5 stars 24 reviews

92,779 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 5 out of 5 stars 258 reviews

333,417 users

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

Cookies Manager+ by V@no

Rated 5 out of 5 stars 72 reviews

93,708 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.

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

Download Now

Not Reviewed

Rated 4 out of 5 stars 1,310 reviews

682,781 users

Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs so you can decide whether to visit a site:
• Green – The site is trusted
• Yellow – Be cautious
• Red – Online threats detected

rikaichan by ffjon

Rated 5 out of 5 stars 109 reviews

38,463 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 631 reviews

55,997 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 admin@worcesterllc.com.

Firefogg by Firefogg

Download Now

Experimental

Rated 5 out of 5 stars 3 reviews

6,605 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 57 reviews

676 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

372 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...

What are Collections?

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

Explore Collections