A server designed to transform data streams to better match device capabilities. For example, Wireless Application Protocol (WAP) gateway servers convert HTML to Wireless Markup Language (WML) for wireless devices, and a number of products can reformat HTML for devices such as mobile phones and personal digital assistants (PDAs). Today, HTML-based servers predominate. While HTML can be made aware of a unique device requesting content, more often “shadow” Web server applications are created to draw off and reformat the native content.