HW Virtual Serial Port allows creating virual serial port drivers.
Safran Identity & Security
Sagem MorphoSmart USB 64 bits Drivers is a driver for fingerprint scanner.
Barcode scanners can be connected to PC through serial port or USB port.
Advantech Equipment Corp.
A gang programmer, which works through your PC's USB port or parallel port.
Universal USB Development Kit allows you to design custom USB device drivers.
Advanced USB Port Monitor will allow you to display the packets sent.
Is a 2-port USB/ MFP server well designed to provide easy network accessibility.
Software USB port sniffer, monitor tool with protocol analyzer and data logger.
microEngineering Labs, Inc.
It's a software that can help you to connect to a PC USB port.
SEH Computertechnik GmbH
It is a free application that can be used on print servers with a USB port only.