USB stands for Universal Serial Bus. See http://www.usb.org/ for information about USB.
UK the google newslink leads me down a dark alley;-?. I've put a swig of my libusb effort on the net: http://home.foni.net/~kuttersegeln/swig_libusb-20050616.tgz
FlexiHub : is a utility which allows to share USB and Serial port over Ethernet, access and manage remote USB and COM port devices from everywhere. Available for Windows, Linux, Mac OS and Android
USB Network Gate : helps to share USB devices via Network (Internet/LAN/WAN) among multiple computers as if the device was plugged into your own machine. Available for Windows, Linux, Mac OS and Android
USB Analyzer : offers simple, yet complete view for monitoring and analyzing activity of USB devices.
Jan Axelson : USB Development Tools
mpssespi : Interface to FTDI serial converter chips. The mpssespi package allow a peripheral chip, appropriately configured to an FTDI USB to serial converter chip, to be controlled from Tcl.
"Integrating USB into Products" [L2 ]
AMG: http://www.dlpdesign.com/usb/usb245.shtml is an outstanding product. On my first project using it I had a supremely easy time interfacing it with both the circuit (eight-bit FIFO) and the computer (Tcl opening a MS-Windows COM1:-type device). I highly recommend it.
slebetman Using the VCP driver for the FT245 on Windows I managed to push around 840kb/s from Tcl. The limiting factor appears to be the recieving end which is a small microcontroller with a 5MHz instruction cycle. Tcl's I/O is very fast!