Socket Workbench 

Socket Workbench is the definitive tool for analysing socket communications that underlie the Internet and several types of inter-process communication.
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Bill Serial Port Monitor 

To monitor (bi-directional) Serial communication RS-232 between two devices without physical cable, you can use the freeware Bill Serial Monitor. This freeware enable you to view, log, test and analyse the activity of the serial RS-232 port.
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Proxy Workbench 

Proxy Workbench is a unique proxy server ideal for developers, trainers and security experts that displays its data in real-time.
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