My Core Collection

by marctoro

12 Add-ons in this Collection

Video DownloadHelper by mig

Rated 4 out of 5 stars 5,868 reviews

4,962,442 users

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

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,800 reviews

2,555,891 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...

iMacros for Firefox by iMacros

Rated 4 out of 5 stars 381 reviews

429,171 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...

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,528 reviews

322,925 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

FireGestures by Gomita

Rated 4 out of 5 stars 887 reviews

411,465 users

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

ColorfulTabs by Shivanand Sharma

Rated 4 out of 5 stars 995 reviews

229,900 users

The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color and makes them easy to distinguish while beautifying the overall appearance of the interface. For Seamonkey & Flock. An essential. F...

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,392 reviews

217,190 users

AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 159 reviews

182,071 users

View HTTP headers of a page and while browsing.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 334 reviews

172,003 users

Adds zoom and rotation functionality for images...

YSlow by YSlow

Rated 3 out of 5 stars 200 reviews

107,098 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. is the official open source website.

Forecastfox Weather by Ensolis

Rated 4 out of 5 stars 1,032 reviews

120,913 users

Get international weather forecasts from and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.

Google Reader Watcher by Ajnasz

Rated 4 out of 5 stars 105 reviews

1,685 users

Checks your Google Reader for unread news

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