Virtual Serial Port Driver allows creating virtual serial port pairs on a PC.
Emulate a GPS receiver unit for testing your GPS applications.
HW Virtual Serial Port allows creating virual serial port drivers.
HHD Software, Ltd.
It allows you to create virtual serial ports and emulate their behavior.
Serial Port Software
Serial Port Splitter grants simultaneous access to a COM port from several apps.
It looks like as real hardware serial ports for communications applications.
ELTIMA Software GmbH
Virtual Serial Port Driver creates virtual serial ports.
A versatile mind mapping tool that can be used like a virtual whiteboard.
A virtual midi port for directly connecting VMC to other software.
Free, unrestricted Virtual Serial Port driver for any TCP/IP devices.
Sollae Systems Co.,Ltd.
ezVSP is a virtual serial port driver and TCP/IP socket program.