iHID is a free application which allows you to easily monitor your HID (USB) devices and show the values of their elements.
Mainly this utility is useful for checking the values of the elements from a Joystick (and keyboards/mice).
You can click on ’More information about this device...’ to retrieve more information about the selected device (VendorID, Manufacturer etc.).
Universal Binary (PPC/Intel)
• Mac OS X 10.4 or later