Inquisitor is browser add-ons that help you to perform better search from the browser’s search box.  It will suggest the keywords as you type as well as websites you have visited before. You might already seen this before on other search engine’s search box, except that Inquisitor presenting it, in more interesting ways with graphic and color.

Cool thing about Inquisor is, it is not search engine-specific, although it is under Yahoo service. The default search engine is Yahoo, but you can switch to other search engine or add other search engines from the option menu. You can also customise the number of results and suggestions to show up.

Inquisitor is available for Safari, Firefox and IE and iPhone (only for the US). Get the add-ons here.