mitmproxy is an interactive, SSL-capable man-in-the-middle proxy for HTTP with a console interface.
Mallory is an extensible TCP/UDP man in the middle proxy that is designed to be run as a gateway. Unlike other tools of its kind, Mallory supports modifying non-standard protocols on the fly.
Gute Ãœbersicht was man alles so mit mod_proxy und Konsorten anstellen kann