Top-Rated Extensions

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NoScript Security Suite Requires Restart Featured

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

Rated 5 out of 5 stars (1,622)
2,173,061 users

Mason Requires Restart

This extension can simplify the rule to just specify the URI and Content type and can enable/disable each rule separately.
What's more, it can customize the web pages by user scripts which is similar to Grease Monkey.

Rated 5 out of 5 stars (67)
4,476 users

TED the Toolbar Requires Restart

A toolbar to monitor your real-time electric use. Requires TED, the Energy Detective and TED Footprints API, products of Energy, Inc. The toolbar now supports both the TED 1000 and 5000 series energy monitors.

Rated 5 out of 5 stars (14)
199 users

Ziftr Alerts (formerly FreePriceAlerts)

You do the shopping. We'll do the searching. It's that simple.

Rated 5 out of 5 stars (23)
3,074 users

Screengrab (fix version) Requires Restart

Screengrab! saves webpages as images.
0.99 released!
New features: upload to internet

Rated 5 out of 5 stars (316)
123,304 users

Rainbow Color Tools Requires Restart

Color tools for web development.

Color picker and eyedropper + saving colors and trying out colors with drag and drop.

Rated 5 out of 5 stars (97)
24,969 users

Live Start Page LST

Live new tab page: living photos in your browser, weather, to-do list, and bookmark tiles

Rated 5 out of 5 stars (26)
5,008 users

Sun Cult Requires Restart

Worldwide Sunrise, Sunset, Twilight, Moonrise and Moonset...

Rated 5 out of 5 stars (116)
3,954 users

Classic Bookmarks Button Requires Restart

Mainly for Firefox 29+!

This add-on restores bookmarks menu known from older Firefox versions on Firefox Australis.

Use 'Customize (Toolbar)' menu to place the new bookmarks button on your favorite toolbar.

Rated 5 out of 5 stars (26)
3,614 users

QuickJava Requires Restart Featured

Allows quick enable and disable of Java, Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth.

Rated 5 out of 5 stars (208)
246,978 users

Addons Manager Hilite

Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.

Rated 5 out of 5 stars (19)
694 users

Humancharacterguess

This addon predicts your character based on date of birth
This add on would be added to addon bar above the taskbar with name HCGdora and click on it to open

Rated 5 out of 5 stars (17)
77 users

Edit Middle Requires Restart

Show AwesomeBar results when editing in the middle (not just at the end)

Rated 5 out of 5 stars (17)
19 users

Hoxx VPN Proxy

Hoxx VPN Proxy service to unblock blocked websites, hide your location and encrypt your connection. Completely free.

Rated 5 out of 5 stars (1,477)
121,516 users

DblClicker

Double-click action for Firefox -
double-click Link, Bookmark/History to open in new tab (emulate ctrl+click).

Rated 5 out of 5 stars (72)
3,282 users

bioFOX Requires Restart

Bioinformatics tools on Mozilla based browsers

Rated 5 out of 5 stars (20)
310 users

Policeman

Policeman gives you precise control over what web requests are allowed. Create rules based on domain name and type of resource being requested. It can also be used to improve privacy or block cross-site scripts.

Rated 5 out of 5 stars (48)
3,434 users

Space Next Requires Restart

Press the "Space" key at the end of a page to load the next page (à la Opera)

Rated 5 out of 5 stars (48)
4,071 users

Double Click Closes Tab Requires Restart

The fastest (yet safe) addon to close tab using mouse only! Close any tab by double clicking the tab. Close current tab by triple click anywhere on the page. Optionally middle click or double right click on page to close tab.

Rated 5 out of 5 stars (38)
3,932 users

Select like a Boss

Select link's text just like a regular text (like in Opera'12 browser) - Select like a Boss ;)

Rated 5 out of 5 stars (38)
3,228 users