FigJam, a free web app by Figma, is a whiteboard tool that enables exchange and collaborative work via a shared workspace. Contributions can be composed, edited and commented with just little effort yet still visually appealing. Depending on your requirements (e.g. feedback round), ready-to-use templates can help you get started quickly. All whiteboards and imported files are stored in a cloud within FigJam. Using the app requires registration; only a limited number of boards can be created in the free version.