The Apple Multitouch Windows Driver is a software driver that allows Windows to properly recognize and interact with the multitouch capabilities of Apple devices such as MacBooks, iMacs, and external trackpads. It enables features like pinch-to-zoom, scrolling, and other multitouch gestures when using Apple hardware on a Windows operating system.

Apple's Multitouch technology is typically found on their trackpads and touchscreens, and the corresponding driver ensures that these devices can function correctly on a Windows system, allowing the user to take advantage of features like swipe gestures, zooming, and tapping.