Alternate Proxies

Squid http://www.squid-cache.org/ Pound http://www.apsis.ch/pound/

As explained in Chapter 9, "Performance and Scalability," Apache may not be the best choice for all scenarios. There are a number of other specialized proxy servers that may perform better than Apache, depending on your requirements. Two of the most popular open-source proxy servers are Pound and Squid. Squid has been around about as long as Apache, is highly configurable, and it excels in its caching abilities. Pound is a lightweight proxy server that is often used as an SSL reverse proxy.