CUBIT is an open source multi-touch system designed by Stefan Hechenberger and Addie Wagenknecht for Nortd Labs. It was developed to "demystify multitouch" technology through making its software and hardware open source and is a direct competitor of Microsoft Surface.

The cubit is an ancient unit based on the forearm length from the middle finger tip to the elbow bottom. Cubits of various lengths were employed in many parts of the world in antiquity, during the Middle Ages and as recently as Early Modern Times. The term is still used in hedge laying, the length of the forearm being frequently used to determine the interval between stakes placed within the hedge.