dncSoftware 

dncSoftware is an easy to use combined DNC software program for CNC file transfer with a combined text editor for easy CNC editing. You can setup to 32 CNC machines for DNC transfer.
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COM Port Toolkit 

COM Port Toolkit is a tool that combines features of serial port (RS-232, 422, 485) terminal and monitoring application. Scripting feature can help to automate data manipulating (for example - CRC calculation) and transfer control.
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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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LinkFerret Network Monitor 

LinkFerret is a versatile Ethernet/ 802.11 network monitor and packet sniffer. All of the essential wireless monitoring functionality, including signal monitoring, channel scannning, and WEP decryption are supported.
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