Serial Port Tester
Serial Port Tester 7.0 can be downloaded from our software library for free. The file size of the latest downloadable installer is 9.2 MB. This download was checked by our built-in antivirus and was rated as malware free. The actual developer of the program is Virtual Serial Port Software. Serial Port Tester lies within Internet & Network Tools, more precisely Network Tools.
From the developer:
Serial Port Tester is a professional software tool that enables you to conduct serial port tests on all of your system's RS232/422/485 COM ports. All of our system's serial port activity can be monitored and displayed as well as being logged and analyzed. You can test multiple com ports at once and use the tool to compare the sessions.
You may want to check out more software, such as Free Serial Port Monitor, Free Virtual Serial Ports Emulator or Serial Port Splitter, which might be related to Serial Port Tester.