Wappalyzer is a browser add-on for Firefox that reveals the technologies used on websites and integrates the information into the browser address bar.It detects content management systems, eCommerce platforms, web servers, JavaScript frameworks, analytics tools and many others. Each product is displayed with an icon in the address bar and clicking on it well reveal a more detailed report.If you are interested in what technologies are used by the websites you visit, you will find Wappalyzer quite useful.