Most Popular Extensions
SeaMonkey Update Server Cert HotFix Requires Restart
Adds the current Certificate used by the Official Update Server to SeaMonkey's acceptable list.
Preferential (New GUID) Requires Restart
Advanced preferences manager for Mozilla-based...
Content Scrollbar Requires Restart
Easily navigate through the long pages. This extension will generate clickable markers for all the headings of a page and places them proportionately on the scrollbar. This extension is a port of Chrome's 'Scrollbar of Contents' to Firefox.
Forwarding to the available information resources Requires Restart
The system is designed to redirect from alias with obsolete and invalid network and a local address information resources on the act for which the resource is available. The system can perform advanced search resources.
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
DMOZ Bookmarks Requires Restart
Download any dmoz category to your browser bookmarks.
XML Digital Signature Tool Requires Restart
XML Digital Signature Tool is a Firefox add-on for processing Digital Signature in XML documents
(Please read the installation instruction in the "Developer Comments" section before downloading)
GDirections Requires Restart
Finds directions on Google and Yahoo Maps based on your selected text and one of various home addresses that you can store.
Vault Shortcut Requires Restart
Adds a toolbar button that opens the LastPass Vault in an external browser.
Share to Google+ Page Requires Restart
Share to your Google+ Profile or Google+ Page with just click of a button.
Super Mario Cross Requires Restart
The legendary arcade game that has survived the ages and can still be found today in modern arcades. You may have played this game when you were a kid and want to have a bit of fun remembering what it was like.
BOINC Stats 2 Requires Restart
Displays your Total and Recent Average Credits for BOINC distributed computing projects in the status bar.
Singlish to Sinhalese Requires Restart
Singlish to Sinhalese Conversion provide by Subasa Language Service
Tooltip Plus Requires Restart
Show tooltips for links and images with URLs, icons, alt text, and long titles.
This extension will remember the last dictionary used in the Mail Compose window and use it when composing new messages.
Livejournal Comments Expander Requires Restart
LiveJournal comments expander. Open all comments for all live journal posts. firstname.lastname@example.org
Soapy Requires Restart
Bypasses DNS-based censorship
NOTE: This was created as a SOPA protest in 2012. This does not work anymore for most sites. Use Tor instead.
AuctionSearchKit Requires Restart
One-click eBay tools providing useful information to the buyer including a map of where items are located, past feedback on similar items and seller history/statistics.
Russian hot keys bugfix Requires Restart
Makes hot keys work with Russian, Ukrainian and Hebrew keyboard layout in Linux and *BSD (needed only for GTK2 builds).
Composer Open In Requires Restart
Adds a toolbar button to Composer to open the current file in another editor or browser.