My team of two uses Trello, Skype, Sketchpad.io and Balsamiq (desktop). What we really need is a solution that can act as a whiteboard where many users can dra

My team of two uses Trello, Skype, Sketchpad.io and Balsamiq (desktop). What we really need is a solution that can act as a whiteboard where many users can draw and write at the same time.