performance testing tool for caching proxies and more

 Web Polygraph is a performance testing tool for caching proxies,
 origin server accelerators, L4/7 switches, content filters, and other
 Web intermediaries. Polygraph's features include:
   * high-performance HTTP clients and servers
   * realistic HTTP, FTP, and SSL traffic generation
   * HTTP and SOCKS5 proxy support, with chaining
   * HTTP Basic, NTLM, and Negotiate proxy authentication
   * LDAP-friendly generation of user credentials
   * flexible content simulation
   * ready-to-use standard workloads for benchmarking
   * powerful domain-specific configuration language
   * portable open-source implementation
 .
 Documentation, test results, and support available at
 www.web-polygraph.org.