HttpWatch is an HTTP Viewer and debugger that integrates with Internet Explorer to provide seamless HTTP and HTTPS monitoring without leaving the browser window.
A plug-in HTTP Viewer for Internet Explorer 6 & 7.
See headers, cookies, caching and POST data
Detailed information about HTTPS, compression, redirection & chunked encoding
Real-time page and request level time charts
Your users and customers can send you log files for free
Millisecond accurate timings and network level data
Use it in automated tests written in C#, Ruby, JavaScript.