prxtools is a suite of proxy tools used to find/identify/test/abuse/use http proxys. 'fizzbounce' maps a tcp connection from a local port over a remote http proxy server which does http-relay to a remote host (defaultly insecure cacheflow proxies and misconfigured squids will do fine). 'polysyndeton' is a simple http proxy (not a real proxy though), that splits http requests among a variable number of http proxies, partly anonymizing your requests and making it more (far away from impossible) difficult to trace you. 'prxtest' reliably tests a http proxy for relay and proxying ability. 'soxtest' reliably tests a socks 5 server for relay ability.