IEWatch is a plug-in for Microsoft Internet Explorer that allows you to analyze HTTP / HTTPS headers, Cookies, GET queries and POST data. The innovative ‘HTML Spotlight’ feature allows quick pinpointing of the HTML code.
HTTP Header analyzer
Smart HTTP Debugger is designed to provide a full-scale tool for web developers to capture, analyze and debug all HTTP communications between the web browser (or any software program) on the client side and the web server on the other side.
HTTProbe is a powerful HTTP sniffer and analyser written in Java which allows you to read HTTP headers, log them and resend directly a HTTP request sent from your browser to a web server after having optionally modify the HTTP request’s header.