From Pkp Software:
etcetera allows you to search the web directly from your browser bar and take control of popup windows. It comes configured with over one hundred of the best websites, or you can easily add a new website through the add website wizard. Controlling those annoying popups is as simple as installing etcetera, the default behavior automatically works with most websites on the internet! The search bar in etcetera is simple and flexible, allowing you to submit any search you would like to any website that you currently use. If a website you use is not already installed, there is a large library of downloads available to allow the website you are looking for.