Socket Workbench 

Socket Workbench is the definitive tool for analysing socket communications that underlie the Internet and several types of inter-process communication.
sockets socket workbench udp socket tcp udp sockets tcp sockets packet sniffing packet sniffer protocol analyzer protocol analyser tcp/ip networking sockets

Proxy Workbench 

Proxy Workbench is a unique proxy server ideal for developers, trainers and security experts that displays its data in real-time.
proxy workbench proxy server sockets socket tcp udp sockets tcp sockets packet sniffing packet sniffer protocol analyzer protocol analyser tcp/ip winsock