IEInspector HTTP Analyzer is such a handy tool that allows you to monitor, trace, debug and analyze HTTP/HTTPS traffic in real time. It is used by industry leading companies including Microsoft, Cisco, AOL and Google. HTTP Analyzer includes two Editions Stand alone Edition and Add on Edition.
Stand alone Edition : Window stand alone EXE application. It allows you to capture and view HTTP/HTTPS traffic from a specific process or user/session/system wide. Support IE, Safari, Chrome, Firefox and other win32 web application.

Add on Edition: An add on that integrates into the lower part of your IE or Firefox window and can be opened/closed from the IE or Firefox toolbar. It can only capture and view HTTP/HTTPS traffic of current IE or Firefox process.