The development of a general-purpose request-reply anonymous communication channel by utilizing HTTP-based anonymizing tools is discussed. Such channels let clients and servers exchange messages in such a way that servers don't know the true identity of clients. The web server does not learn the true IP address of the web-browsing client. Such anonymous tools can be classified as being either mix-net-based or proxy-based. Proxy-based designs are simpler than mix-net-based designs, but usually offer a weaker form of anonymity.