Introducing Fiddler
What is Fiddler?
Fiddler is a Web Debugging Proxy which logs allFiddler is freeware and can debug traffic from virtually any application that supports a proxy, including Internet Explorer, Google Chrome, Apple Safari, Mozilla Firefox, Opera, and thousands more. You can also debug traffic from popular devices like Windows Phone, iPod/iPad, and others.
To debug applications you've written in Java, .NET, or using WinHTTP, see this page.