Burp proxy is an interactive HTTP/S proxy server for attacking and debugging web-enabled applications.
Seeks is a free and open P2P design and application for enabling social websearch. Its specific purpose is to regroup users whose queries are similar so they can share both the query results and their experience on these results. On this basis, Seeks allows for true real-time, decentralized, websearch to emerge.
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.
eigene proxy-einstellungen für chrome/chromium, mit weiche
Transparent proxy server that works as a poor man's VPN. Forwards over ssh. Doesn't require admin access. Works with Linux and MacOS, now including 10.6