Extensions by Name

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Track Package

Track Packages from the right-click menu...

Rated 4 out of 5 stars (24)
3,481 users

TrackMeNot

Protects privacy in web-search. By issuing randomized queries to popular search-engines, including Google, Bing, and Baidu, TrackMeNot obfuscates users' search data profiles.

Rated 4 out of 5 stars (81)
30,200 users

Transliterator No Restart

Transliterator allows as-you-type conversion of text from one alphabet to another, as well as transliteration/detransliteration anywhere within documents.

Rated 5 out of 5 stars (65)
8,191 users

Travel VisaHQ Widget

Unique application for checking visa requirements and embassies search. The addon will help in planning your trip. In few seconds you can find out whether you need a visa to the country you want to visit and learn the address of your embassy.

Not yet rated
10 users

Trueblock Plus

Trueblock Plus is a fork of the Adblock Plus extension for blocking unwanted advertisements on the web. This fork provides the exact same features as Adblock plus, with the unpopular, unwanted "acceptable ads" (non-)feature turned off by default.

Rated 4 out of 5 stars (41)
4,348 users

TryAgain

TryAgain keeps trying to load a webpage when the server cannot be reached.

Rated 4 out of 5 stars (60)
6,555 users

Tuenti Share

Comparte en Tuenti la web que veas al instante. Haz clic derecho sobre la web en cuestión y pulsa Compartir en Tuenti

Not yet rated
70 users

Tv program

It shows popular stations TV program in listings, alerts and bubble infos. It's only for Czech and Slovak TV stations.
Localization: sk, cs, hu, en

Rated 2 out of 5 stars (9)
196 users

Twitter App

Twitter App brings Twitter right into your Firefox Sidebar.

Rated 4 out of 5 stars (12)
10,027 users

TwittyTunes

Allows to post your currently playing songs to Twitter with a click. As a bonus, you can also post the websites you're visiting, videos you're watching and more!

Rated 4 out of 5 stars (15)
53 users

tzpush

Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.

Rated 4 out of 5 stars (5)
786 users

Ubuntistas menu

A menu for easy browsing the Greek Ubuntu sites and not only.

Rated 5 out of 5 stars (4)
31 users

UniText

Unicode Character Style Replacer

Not yet rated
12 users

UnMHT No Restart

UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.

Rated 5 out of 5 stars (184)
84,808 users

Unpacked extension loader

This addon should be useful for addon developers who prefer to work with unpacked exentsions for test purpose.

Not yet rated
9 users

UnPlug

UnPlug is an extension which lets you save video and audio which is embedded on a webpage - it's a video download tool.

Rated 4 out of 5 stars (232)
60,122 users

Unsubscribe from Mailing List

Allows recipients to cancel their newsletter subscriptions in the thunderbird interface.

Rated 4 out of 5 stars (12)
985 users

Update Channel Selector

Allows you to change the application update channel.

Changing only the channel with Gecko 12 became insufficient because it's "*.mar" related security landings.

Rated 3 out of 5 stars (10)
11,714 users

URL Fixer No Restart

URL Fixer fixes common typos in URLs entered in the address bar. It will fix errors like "google.con" or "youtube,com". You have the option of being asked to confirm corrections before they are applied.

Rated 4 out of 5 stars (83)
30,969 users

URL Flipper

Quickly and easily increment and decrement numbers and strings in URLs for navigating through URL sequences.

Rated 4 out of 5 stars (31)
5,174 users