"Fiddler's main window displaying the menu, the HTTP sessions and for the selected session, the performance statistics."

"The Session Inspector showing the request header and other useful information in the following tabs: TextView, Webforms, HexView, Auth..."

"The Rules menu allows you to set automatic breakpoints, hide image requests, hide HTTPS Connects and customize the rules."

"The Tools menu gives you access to the most imprtant application options and some other functions including Clear WinINET Cookies and caches or text encode/decode."