Hide(block) site specific unwanted results of Google Search
Also support Bing Search
Get rid of that clumsy context menu, and search the web using up to 100 stylish Drag & DropZones
Organize your search engines with separators and folders.
Manage your search engines in the Extension Manager.
"Multi smart search" displays a new context menu including all the installed search engine. Try the new version! DOWNLOAD it there: https://addons.mozilla.org/firefox/addon/11173/contribute/roadblock/?src=version-history&version=2.0.20110408 :)
enhancedfindbar synchronizes the findbar with the search bar and enables mouse wheel search.
Adds PNG favicons to some search engines and web directories, such as Google, Yahoo, Bing, Ask, Altavista, Wikipedia, AOL, Dmoz, Alexa, del.icio.us and others.