OutWit is FireFox addon which can be added to your Firefox browser. It's free to download. It's much like google web scraper tool but advantage of using Outwit is that it has many major features which can be used for data extraction.
OutWit automatically scans all the web pages for you from internet and extracts them in right format. You don't need to have programming skills to handle this tool, even a non programmer can run this tool from firefox window.