WAO is an easy-to-use application optimization tool designed to boost the performance of dynamic Web sites by reducing the page size and optimizing the HTML code rendered by the ASP.NET engine. The most important WAO features include HTTP compression, ViewState optimization and CSS/Javascript optimization - all in one affordable package.

WAO significantly increases the response time for Web applications of all sizes. Most importantly, there is no need to modify the source code of your applications.
More information is available at WAO demo site, http://wao.mono-software.com.