SearchBastard is an experimental advanced search add-on for Firefox browser. It incorporates some mind-boggling search tools and mechanisms which turn it into a search power house. You can group search engines, clean up search results, perform multisearch, quickly look up words on a page by selecting the text, add the non-conventional search engines to your list and much more.
Almost every setting in the add-on is customizable. It is such a powerful tool with so many features that it is hard to describe it in a single article. Watch video below to see it in action:
Though the extension is in the experimental mode, it has got some great reviews by the users which means that it works quite well.
Check out Searchbastard Firefox add-on @ addons.mozilla.org/en-US/firefox/addon/8030