Google has launched Instant search a month ago,It become very popular because its easy to use and provide faster search result by just typing keywords.
But sometime you may want more faster search result and you don’t have time to open Google homepage.
InstantFirefox is a Firefox Add-On which bring Google Instant Search to Firefox.
All you need to do is just Install it on Firefox,Once its installed whenever you open new tab and type any thing it will show Google Search for that keywords.
You may also refer this video for quick view :-
You may use following link to install it on Firefox :-