DuckDuckGo is a search engine that does not track you. Adds DuckDuckGo as the default address bar, search bar and right-click search engine. Adds a handy toolbar button for easy access to !bang tags. Adds DuckDuckGo instant answers to Google/Bing.
Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs to help you make informed decisions about whether to visit a site or not.
Integrates location bar and search bar into one. Shows search and url suggestions. Quickly switch search engine using search keywords. Provides different auto-complete popup styles for compact displays.
Dead pages, broken links, the scourge of the internet. Powerhouse sites like Slashdot and Digg can bring a server to its knees. What do we do when a page is dead but we still want to see it? Call in the clerics, and perform a resurrection...
Keyword Search oleh Mike Kaply
Search in the awesome bar without changing your search engine.
This extension prevents Google and Yandex search pages from modifying search result links when you click them. This is useful when copying links but it also helps privacy by preventing the search engines from recording your clicks.
Fastest Search oleh Mingyi Liu
This all-in-one search/browse/productivity boosting addon could replace many top addons yet offers MANY unique features like regex, smart searchbox, multi-tab preview, ... Ctrl-Shift-F activates a special FindBar more powerful than any browser/addon.
StumbleUpon oleh StumbleUpon
StumbleUpon is the easiest way to discover new and interesting photos, videos, web pages and more, recommended by a community of experts. Tell us what you are interested in and we recommend page after page of amazing stuff you’d never expect to see.
An extension that adds a Google search box to the standard Firefox new tab page
FindBar Tweak oleh Quicksaver
Anything between simple tweaks such as placing the findbar in the top corner, to the powerful "Find in All Tabs" tool, FindBar Tweak will make your find toolbar "just right"!
Quick lookup in Wiktionary and Wikipedia, without the need to open a new tab.
Just right-click a word while shift / ctrl / alt is pressed.