ThunderCache Pro is an enhaced standalone high-performance web caching system. It's main goal is to be able to cache dynamic contents, the content most proxing systems are unable to do caching. This is how ThunderCache becomes high-performance and high-eficiency. ThunderCache is freeware up to 50 concurrent sessions, and needs commercial license to run more than 50 concurrent sessions. It's designed to run on FreeBSD. Advanced features include TProxy support (IP_BINDANY), ToS/DiffService marking. WWW: http://www.bmsoftware.org