Add-ons
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Travel VisaHQ Widget
Requires Restart
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.
True Full Screen in SeaMonkey
This extension enables true full screen mode in SeaMonkey for HTML5 video players, slide-shows, etc. and also for full screen invoked manually with the F11 key.
Trueblock Plus
Requires Restart
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.
TryAgain
Requires Restart
TryAgain keeps trying to load a webpage when the server cannot be reached.
Tuenti Share
Requires Restart
Comparte en Tuenti la web que veas al instante. Haz clic derecho sobre la web en cuestión y pulsa Compartir en Tuenti
Tv program
Requires Restart
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
TwittyTunes
Requires Restart
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!
tzpush
Requires Restart
Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.
Ubuntistas menu
Requires Restart
A menu for easy browsing the Greek Ubuntu sites and not only.
UniText
UnMHT
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.
Unpacked extension loader
Requires Restart
This addon should be useful for addon developers who prefer to work with unpacked exentsions for test purpose.
UnPlug
Requires Restart
UnPlug is an extension which lets you save video and audio which is embedded on a webpage - it's a video download tool.
URL Fixer
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.
URL Flipper
Requires Restart
Quickly and easily increment and decrement numbers and strings in URLs for navigating through URL sequences.
url.ba shortener
UrlCorrector
Type web addresses always in Latin letters no matter of your current keyboard layout.
URLFilter
UrlParams
Requires Restart
Shows you the GET and POST parameters of the current website in the sidebar...
User Agent Changer
Requires Restart
Adds a menu and a toolbar button to change the user agent of a browser.
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