TCP Spy .NET is a small application used to trace TCP packets between a client and a server. Optimized for .NET Web Services or Web Site TCP Spy .NET will help you find any bottleneck and it will help you in analyzing your bandwidth usage. With TCP Spy .NET, you can inspect data in different views, track server calls or just redirect the host.

WebDelegator is a server solution that permits a collection of web servers to be hosted on a single IP address. The software accepts connections on a particular address, and establishes connections to the appropriate web server to fulfill the requests. Administrative web interface allows the monitoring of connection and data transfer statistics. Access control lists allow the filtering of incoming connections.

HTTPManifold is an open-source Java based application for funnelling Web/HTTP traffic for multiple servers through a single IP address. It is intended for home users and small businesses so that they can host multiple domains and sub-domains through a single IP address on port 80. HTTPManifold forwards traffic to other machines, logs requests, rewrites content during the process, andlogs the raw content of requests for the purpose of debugging.

HTTP Analyzer is a utility that allows you to capture HTTP/HTTPS traffic in real-time. It displays a wide range of information, including Header,Content, Cookies, Query Strings, Post data, Request and Response Stream, redirection URLs and more. It also provides cache information and session clearing, as well as HTTP status code information and several filtering options. A useful developer tool for performance analysis, debugging and diagnostics.

IETrace is a tool captures and shows the complete trace of HTTP/HTTPS
data sent and received by Internet Explorer while you navigate
websites.

For each HTTP or HTTPS transaction (a request and its corresponding
response) IETrace shows the following data in a well organized UI running in a separate process.

MMD HttpHeader is small, absolutely free tool designed to display http headers. Just
type http address to get http header and connection timeout displayed in text window.
It's perfect for all who learn http protocol, internet programers and testers and webmasters.

Trace / view http header data, see cookies being sent and received - control whether they get sent or not. See what the JavaScript on a web page is actually doing. Browse anonymously by withholding your Referer tag, and user agent. Even change your Referer and User-Agent tags to pose as someone else. Find out what sort of URL redirection the site may be using. A must for webmasters, or as a debugger for any one writing software that uses http.

IISTracer is a real-time monitoring tool for Microsoft IIS scripts (.asp, .cgi,..), static files (.htm,.gif,..) and downloads (.mp3,.zip,..). Lets you show online current state and progress of each running request in IIS. Lets you log IIS state. Current number of running requests (scripts/downloads), Current state of the request, Script start time and running time with precision up to milisecond. Request and response content-length.

Used to examine unaltered http requests and responses intercepted with and without proxy. There are several views for the data. Raw view shows the data in bytes. Text view shows the headers in the request and response as well as the http payload. The list of requests and responses are also available in two different views. One view shows the summary of the request. The other view shows the actual sends and receives performed by the browser.

Request Commander - trouble ticketing system for tracking user requests.
Allows you to process user requests on-the-fly and store their conveniently.
Request Commander offers pictorial information presentation: you see request category list, request list and answer list at once. Smart presentation, search and filters enable to find any information easy.
Request Commander offers quick information adding that received by phone or email.

ClientIPForwarder is a simple ISAPI plug-in for Microsoft ISA server using pass-through technology to control incomming requests on Microsoft ISA server. It modifies http(s) request header and adds variable IPREMOTEADDR containing client IP address to it. It also can map http server variables into your own variables in http header.