I.T.B. Italian mirror Site of Squid Internet Object Cache
Squid offers high performance proxy caching for Web clients, It
supports FTP, Gopher, and HTTP requests. The cache software,
available only in source, is more than an order of magnitude faster
than the CERN httpd and other popular Internet caches, because
it never needs to fork (except for FTP), is implemented with
non-blocking I/O, keeps meta data and hot objects in VM,
caches DNS lookups. Squid caches can be arranged
hierarchically for an improvement in response times and a
reduction in bandwith usage. Squid runs on all popular Unix platforms.