Web Accelerator:

• varnish        # OS: Linux (FreeBSD licence)
• squid

Debug Proxy:

• Fiddler - HTTP Debug          # OS: Win32 (Freeware)

輕量級 Proxy:

tinyproxy - A lightweight, non-caching, optionally anonymizing http proxy

privoxy - Privacy enhancing HTTP Proxy

hpsockd - SOCKS server

• /usr/sbin/hpsockd
• /usr/share/doc/hpsockd/examples/hpsockd.conf

Other

• tcp-proxy
• proxy_iptables