Up & Coming Extensions

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Copy Pure Text

Allows to copy selected text as plain text by adding a 'Copy as Text' menu item to context menu.

Rated 4 out of 5 stars (15)
5,869 users

HTTPS Everywhere

Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.

Rated 5 out of 5 stars (25)
23,189 users

Forecastfox (fix version)

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

Now Available for: Firefox, Thunderbird and SeaMonkey!

Rated 5 out of 5 stars (132)
45,600 users

All Menus Button No Restart

Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.

Rated 5 out of 5 stars (4)
1,866 users

Free Memory Button No Restart

Free unused memory that Firefox is currently using.

Rated 5 out of 5 stars (3)
7,562 users

uBlock Origin No Restart

Finally, an efficient blocker. Easy on CPU and memory.

Rated 5 out of 5 stars (175)
238,119 users

Close Proxy Authentication

Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.

Rated 5 out of 5 stars (2)
1,266 users

uMatrix No Restart

Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.

Rated 5 out of 5 stars (24)
8,220 users

Sharp Color Picker No Restart

A full featured color selector tool, to work with colors, and easily find the colors you want.

Not yet rated
1,510 users

Bookmark Toolbar Menu Button No Restart

Show the contents of the Bookmarks Toolbar in a drop down menu. This compresses the bookmark menu into one button that you can put on any toolbar you want to.

Rated 4 out of 5 stars (3)
1,723 users

cacaoweb

Watch videos without limit

Not yet rated
1,747 users

NewsFox Featured

NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader.

Rated 4 out of 5 stars (209)
25,220 users

HTitle

Hide title bar if window is maximized.

This extension created only for GNOME 3. It can create problems with another DE (KDE, XFCE, etc). However, you can use HTitle at your own risk (need enable "legacy" mode on settings page).

Rated 5 out of 5 stars (88)
8,154 users

Join-NG

Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".

Rated 5 out of 5 stars (2)
1,678 users

RedirectCleaner No Restart

RedirectCleaner cleans Redirects from Links

Rated 4 out of 5 stars (6)
5,337 users

ColorZilla

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

Rated 5 out of 5 stars (302)
268,738 users

Mouse Gestures Suite

Mouse gestures for SeaMonkey & Firefox: navigate & execute commands using mouse gestures (with single mouse button) and rocker gestures (by pressing 2 mouse buttons). Also: scroll wheel navigation, page scrolling, tab scrolling.

Rated 4 out of 5 stars (22)
6,799 users

Add-ons Manager Context Menu

Add more items to Add-ons Manager context menu.

Rated 5 out of 5 stars (32)
10,706 users

Dictionary Switcher

Toggles dictionaries automatically or manually and displays the currently selected one

Rated 4 out of 5 stars (169)
22,284 users

Lightning Featured

Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.

Rated 3 out of 5 stars (1,858)
3,672,520 users