HHD Software, Ltd.
It allows you to create virtual serial ports and emulate their behavior.
USB Virus Scan
A small utility that scans for threats in USB drives.
Virtual Serial Port Driver allows creating virtual serial port pairs on a PC.
VSPE is intended for engineers and developers to create/debug/test applications.
HW Virtual Serial Port allows creating virual serial port drivers.
Gilisoft International LLC.
Prevent data theft by disabling reading and writing operations.
Is a 2-port USB/ MFP server well designed to provide easy network accessibility.
The Mediakit 200 is a multifunction product that includes a Port USB Hub.
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.
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.
SEA spol. s r. o.
This application will let you to control easily GSM RELE 3 from PC via USB port.
With this software you can control up to 16 servos through PC's USB port.
usbpicprog is an open source Microchip PIC programmer for the USB port.