parallel port

Allows you to connect any serial port devices over TCP/IP network or Internet

Using the COM Port in VB.NET

With COM Port Splitter you can manage real and virtual ports as you need.

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

Start/stop monitoring of the serial port

Software solution for monitoring serial port activity on Win32 PCs.

Free Serial Port Monitor, RS232 Com Software Sniffer

Create virtual COM ports connected with virtual null-modem cable, share COM port

Serial port data transfer software log data to local remote computer disk file

Control external devices with serial interface - use Serial Port AX Control.