Web Polygraph is a benchmarking tool for Web proxies. Polygraph distribution includes a high-performance client and server simulators. The simulators create a stream of HTTP requests that can be routed through a Web proxy. Studying proxy performance under various [stress] conditions is essential for performance tuning, evaluation of new algorithms, analysis of hardware configurations, and comparing available proxy products. Documentation can be found at http://polygraph.ircache.net/doc/ WWW: http://polygraph.ircache.net/ --Dima dima@chg.ru