socksXh vs socksX

• "socks5h://" and "socks4a://" mean that the hostname is resolved by the SOCKS server.
• "socks5://" and "socks4://" mean that the hostname is resolved locally.

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
• ssh proxy