1)   IEWatch 4.5
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 viewer, HTTPS viewer, http proxy, https proxy, HTTP Software, http tool, HTML Analyzer, HTTP headers, HTTP Cookies, HTTP POST,

 2)   HTTProbe 1.0
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.
http, HTTP sniffer, http header viewer, http viewer, http diagnostics, http interceptor, web sniffer, decode http packets, HTTP protocol analyzer, HTTP request,