Default extensions

by Asmodeus Dh'oine

49 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,879 reviews

20,486,521 users

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Video DownloadHelper by mig

Rated 4 out of 5 stars 5,385 reviews

4,881,892 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 1,770 reviews

2,381,661 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...

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,578 reviews

1,387,044 users

The first and only download manager/accelerator built inside Firefox!

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 959 reviews

1,280,355 users

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

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 245 reviews

384,944 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Element Hiding Helper for Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 443 reviews

764,660 users

Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.

Flashblock by Philip Chee

Rated 4 out of 5 stars 1,157 reviews

742,990 users

Never be annoyed by a Flash animation again! Blocks Flash so it won't get in your way, but if you want to see it, just click on...

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 924 reviews

563,905 users

FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.

Check out my new project, FireSSH!

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,510 reviews

317,464 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!

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 300 reviews

258,896 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 330 reviews

152,789 users

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

ChatZilla by Gijs Kruitbosch, Robert Ginda, others

Rated 4 out of 5 stars 125 reviews

153,174 users

A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.

Tweak Network by Edwin Martin

Rated 4 out of 5 stars 122 reviews

22,887 users

Tweak Network will speed up the loading of web pages and increase the maximum number of simultaneous downloads from a site.

Tab Utilities by ithinc

Rated 4 out of 5 stars 740 reviews

26,379 users

Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing, including Protect/Lock/Faviconize/Unload Tab, Reload Every, Select and manipulate multiple tabs simultaneously, Tab Stacking/Coloring, etc.
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