Up & Coming Extensions
Join-NG Requires Restart
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".
BiDi Mail UI Requires Restart
Direction control and BiDi-related charset misdetection correction
Remove Duplicate Messages (Alternate) Requires Restart
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).
The first and only download manager/accelerator built inside Firefox!
ThreadKey Requires Restart
Strike the 'T' key to sort messages by thread, strike the 'U' key to sort them unthreaded again, just like the 'G' key switches to Grouped By Sort view.
DOM Inspector Requires Restart
DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.
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.
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
FlashGot Mass Downloader Requires Restart Featured
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.
ChatZilla ru-RU Requires Restart
Russian translation of ChatZilla
QuickDrag Requires Restart
Extends the function of the drag-and-drop mouse gesture so that it can be used to load URLs, do a web search of selected text on a page, or save an image on a page. The successor to Super DragAndGo.
Sea Fox Requires Restart
Transform SeaMonkey into Firefox 3.x
AutoPager Fixed Requires Restart
AutoPager Fixed is a working version of AutoPager extension for Firefox 36+ (non-E10s mode) to autoload the next page(s) when you scroll pages.
ATTENTION: DISABLE THE ORIGINAL AUTOPAGER ADDON!
QuickPasswords Requires Restart
Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.
Now also includes SSO change (multi-domain pw) and Backup + Restore.
AutoProxy Requires Restart
Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.
When you press the middle mouse button or scroll wheel mouse show popup window the history in the url bar and search bar.
Smart Near-Infrared Control.
Słowniczek Requires Restart
Adds to context menu web dictonaries: Ling.pl, Dict.pl, Diki.pl, Angool.pl, MegaSłownik, Onet.pl: Tłumacz and Synonimy.pl
Find Image Copies Requires Restart
The Find Image Copies Firefox extension helps you quickly find image copies. Search for image copies straight from the right-click menu in any website.
Tab Clicking Options Requires Restart
Select actions for various clicking events on a tab or the tab...