netcat - Netcat is a featured networking utility which reads and writes data across network connections...

Proxifier - Proxifier extends the advantages of a proxy server to network applications that don't natively support it.

Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

Proxycap - ProxyCap empowers you to divert your PC’s system associations through intermediary servers.

SmartSniff - SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers.

Wide Cap - WideCap - is system proxifier. It was created as `extended` version of FreeCap program.