There was a download of MicroRidge - ComTestSerial 3.0.0.111 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free program is a product of MicroRidge Systems.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The software lies within System Utilities, more precisely Device Assistants.
From the developer:
ComTestSerial helps establish communication between your serial device and your application.
This tool supports all of the commonly used communication parameters and displays all characters including control and extended characters. The LED status indicators shows state of handshake lines and display parameters.
You may want to check out more software, such as ComTestSerial, which might be related to MicroRidge - ComTestSerial.