WebScarab

WebScarab is a tool created by OWASP that can be used to analyze the HTTP(S) traffic between your browser and the web server. In order to intercept traffic, you have to configure WebScarab as a proxy server in your browser. Whenever a request is send to the web server by your browser, WebScarab intercepts the request and holds it for reviewing or even modifying before actually sending the request to the web server. The complete request can be analyzed in all its detail, which includes HTTP headers.



It's a great tool for debugging complex problems or reviewing the security of your applications. Download WebScarab here.