The first addon you should be installing on a fresh Firefox install. A must have. The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color.
WebRank SEO Toolbar Featured
A toolbar that gives Google Pagerank, Alexa, Compete and Quantcast Rank, pages indexed and backlinks in Google, Bing and Yahoo. Bookmark webpages at PickMeWeb.com, view similar websites at SimilarSites.com. Delicious, Digg and Tweet Count.
Google Privacy Featured
Make some popular websites respect your privacy settings.
Please see the known issues below!
Classic Toolbar Buttons No Restart Featured
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions on Windows.
Beta builds on versions page!
FB Phishing Protector No Restart Featured
Protects you from Phishing or Scams (through XSS injection attacks) while you're on Facebook™ - Version 4.2 introduces a Tracking Protection feature as well.
DuckDuckGo Plus No Restart Featured
DuckDuckGo is the search engine that doesn't track you. We also have smarter answers and less clutter. This extension makes DuckDuckGo available in the address bar, search bar and right-click menu. Also adds a handy toolbar button with more features!
Scrolls the page smoothly when scrolling the mouse wheel (or keyboard arrows if enabled).
FireTube (Youtube Music Player) No Restart Featured
Listen to free, unlimited music with FireTube.
Simply search the artist or song of your choice and enjoy.
Take FireTube on-the-go with the Android app.
OmniSidebar No Restart Featured
Bring your bookmarks into view with just a gesture. Move the sidebar across the screen. Open a different sidebar by just clicking its title. And more! Keeps your sidebar simple and quick to access!
Fox Web Security Featured
Protection from adult content (parental control) and from dangerous sites.
Entrust protection for yourself and your children to professionals!
Free Memory No Restart Featured
An add-on to perform free-memory operations without visiting about:memory.
For Firefox 40+, try Free Memory 2.0 https://addons.mozilla.org/en-US/firefox/addon/free-memory-20/
New Tab Tools No Restart Featured
Customizes the new tab page. Add more tiles. Add the launcher from Firefox start. Have a background image. Set new tile images and titles. See recently closed tabs. And more...
iMacros for Firefox Featured
Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!
Add to Search Bar No Restart Featured
Make any pages' search functionality available in the Search Bar (or "search box")...
Tab Mix Plus Featured
Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.
BugMeNot No Restart Featured
Bypass compulsory web registration with the context menu via www.bugmenot.com.
LeechBlock is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.
Keyword Search No Restart Featured
Search in the address bar without changing your search engine.
Gmail Notifier (restartless) No Restart Featured
Multiple account (or label) Gmail notifier (without storing passwords)