Web Application Inspector, developed by VeryCoolUsefulApps, is a free Chrome add-on that allows users to detect web applications and JavaScript libraries while browsing websites. With just a click on the small icon in the browser's search bar, users can access a wealth of information about the technologies used on a website.

This handy tool can identify popular content management systems like Wordpress, Drupal, and Joomla, giving users a quick understanding of the underlying framework. Additionally, it can recognize web servers such as IIS, Apache, and Nginx, providing insights into the server infrastructure.

One notable feature of Web Application Inspector is its local analysis approach. The tool performs all its analysis locally without making any external calls. Users can verify this by using TCPView or other similar tools if they are interested in confirming the tool's behavior.