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split COM port, open COM port by several applications

Monitor data received from and sent to a COM port in manual, auto or spy modes!

Serial COM port component for VB.NET, VC#.NET, VB, Delphi, ASP .NET and more

Serial COM port toolkit for VB, VB.NET, VC#.NET, Delphi, ASP, PHP, Java and more

Free Serial Port Monitor, RS232 Com Software Sniffer

Serial Port Monitor for professional RS232/422/485 COM ports monitoring.

Monitor RS232/422/485 COM ports in your network.

RS232 to TCP/IP Converter - Virtual Serial Port Software

Monitor and save all data on the COM port.

Uses Advanced Serial Data Logger to get either data from an RS232 or COM port.