What are you wanting to monitor? You have USB Serial device and are you writing the software to talk to something over this port or is there commercial software running on the machine talking through the port and you want to monitor that? You can download SERMONCL () which is a serial dump program like tcpdump for ethernet. To use it you need another two serial ports (Keyspan USA-28X) and use them to monitor the serial line. Another way, if you are doing your own software is TERMS () TERMS is a terminal server, it will hook a serial port to a TCP/IP port and you talk to that from your program and then you can monitor all the data via tcpdump or Ethereal.
Serial Com Port Monitor connects to a com port, opened by any application or hardware and starts monitoring it. From now on, all the data that goes through the monitored port will show in this. Serial Tools is a set of serial port tools for OS X. It includes a Terminal Emulator, a Protocol Analyzer and a serial port monitor to watch for connections and removals of serial ports.
These aren't as nice as the program you reference but they are free and you get source.
Mac Serial Port Terminal
Serial Port Analyzer
What are you wanting to monitor? You have USB Serial device and are you writing the software to talk to something over this port or is there commercial software running on the machine talking through the port and you want to monitor that? Intel 5 series/3400 series chipset family heci controller. You can download SERMONCL () which is a serial dump program like tcpdump for ethernet. To use it you need another two serial ports (Keyspan USA-28X) and use them to monitor the serial line.
Another way, if you are doing your own software is TERMS () TERMS is a terminal server, it will hook a serial port to a TCP/IP port and you talk to that from your program and then you can monitor all the data via tcpdump or Ethereal. Address label software for mac. These aren't as nice as the program you reference but they are free and you get source.