Interface Customizations

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Google Hangouts Web Messenger No Restart

Google Hangouts Web Messenger brings Google Hangouts right into your browser to chat with your friends.

Not yet rated
313 users
Added July 19, 2016

Open With IE + Edge

View links, pages, and bookmarks in IE, Edge or any other browser. Modify any menu, browser name or location. Incognito/private browsing mode is also supported. Works for all Firefox locales/languages.

Not yet rated
9 users
Added July 18, 2016

YouTube Video Player Pop Out No Restart

YouTube Video Player Pop Out lets you pop out YouTube videos so that you can watch YouTube videos while you surf.

Rated 5 out of 5 stars (2)
25,614 users
Added June 19, 2016

Restart Browser

Add browser-restart buttons and browser-restart menus to Firefox and SeaMonkey browsers.

Rated 5 out of 5 stars (1)
434 users
Added June 7, 2016

jsbtn

JS on/off status bar button

Not yet rated
3 users
Added May 28, 2016

Tategaki

Tategaki allows vertical writing-mode on mail compose window.

Not yet rated
14 users
Added May 16, 2016

AMO Browsing for SeaMonkey No Restart

This extension makes browsing for extensions easier at addons.mozilla.org. It fixes incorrect information about some extensions being not available for SeaMonkey and adds links to the Add-on Converter where needed.

Not yet rated
59 users
Added March 13, 2016

Open With Internet Explorer No Restart

Open With Internet Explorer sends pages from Mozilla Firefox to Internet Explorer.

Not yet rated
4,605 users
Added March 10, 2016

Restart Application Button No Restart

Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.

Rated 4 out of 5 stars (3)
555 users
Added March 10, 2016

Responsible Blocker No Restart

The "Responsible Blocker" arrives to save the Internet, this extension blocks all those annoying ads, but allows only small and acceptable ads, so the websites you like can continue online.

The "Responsible Blocker" arrives to save the Internet!

Not yet rated
7 users
Added March 9, 2016

GNotifier No Restart

Add-on for Firefox and Thunderbird. Replaces built-in notifications with the OS native notifications. It supports most Linux Desktop Environments, Windows 8.1 & 10.

Rated 5 out of 5 stars (13)
10,807 users
Added February 14, 2016

GNOMErunner Options

Allows to customize GNOMErunner theme

Not yet rated
486 users
Added February 12, 2016

Stylish-Custom

custom additions to Stylish extension

Rated 5 out of 5 stars (3)
588 users
Added January 12, 2016

Open With Vivaldi Browser No Restart

Open With Vivaldi Browser sends pages from Mozilla Firefox to Vivaldi browser.

Rated 3 out of 5 stars (1)
135 users
Added November 20, 2015

Speed Start No Restart

Speed Dial & Start Page with flexible layout for fast access to sites via visual bookmarks

Rated 5 out of 5 stars (36)
5,606 users
Added September 23, 2015

Undo Close Tab Button No Restart

Reopens the last closed tab.

Rated 5 out of 5 stars (3)
778 users
Added July 9, 2015

Profile Buttons No Restart

A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.

Rated 2 out of 5 stars (3)
1,144 users
Added July 8, 2015

Reload Skip Cache Button No Restart

Reload page without using content stored in the browser cache to make sure you get any updates.

Rated 5 out of 5 stars (1)
695 users
Added June 28, 2015

Add-ons Manager - Version Number No Restart

Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.

Rated 5 out of 5 stars (18)
1,590 users
Added June 27, 2015

Open With Google Chrome No Restart

Open With Google Chrome sends pages from Mozilla Firefox to Google Chrome.

Rated 4 out of 5 stars (6)
11,800 users
Added June 23, 2015