OpenBoard is a free and open-source interactive whiteboard software compatible with any projector and pointing device.
Currently, OpenBoard is maintained by the Education Department (DIP) of the canton of Geneva, in Switzerland. The University of Lausanne, who developped the original Uniboard software in 2003 has joined the effort by means of a logistical and financial contribution.
It runs on Windows, macOS and Linux (including a Flatpak).