Briteclick is an add-on for Firefox that allows you to search anything in the web in a more comprehensive way when using Firefox. You'll nly have to start typing the word you want to search for in Google, Youtube, Wikipedia, tetc. and click the button appearing above. The window will be divided in two parts and you'll be able to view results in the right side of the screen, without having to move from the tab you were using. Briteclick is the easy way to search anything in the web. You won't have to change tabs to view results and re-check them.
