SmarterFox is a free OpenSource FireFox add-on that helps you to speed up common searching tasks like searching on Google, Yahoo, Wikipedia etc. SmarterFox once installed has a lot of features that help you extend your search capabilities to find the information quickly and efficiently. Its features can be invoked or turned off using the options dialog box.
Conversion of text links into clickable urls, search bubble appears when you highlight text, shows Google results automatically in the awesomebar, automatic copy of text are some of its features. Search engines can be configured using the Quick launcher which can be invoked by default using Ctrl+Space key combination.
SmarterFox works with FireFox 3.0 and above. It’s a must have add-on for FireFox, can be downloaded here.