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HHD Software is renowned for developing easy-to-use quality software tools useful both for large companies engaged in professional software/hardware development and for the custom user in daily use.
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Free Serial Port Monitor
This is the HHD Software Free Serial Port Monitor product home site. If you are looking for some simple, fast and easy-to-use serial port monitoring solution with all related stuff, this site is exactly what you need.
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Monitor Your PC Ports and Connections
PC Ports and Devices Monitoring Software for Windows