I am looking for a collaborative tool to use for non colocated teams to perform story mapping. I know there are many free services available, but these free sites don't offer the necessary security.
Hi! Have you checked out the Story Map app in the Agile Central App Catalog? I don't think it will have the collaborative real-time aspect you want, but maybe it'll work with screen-sharing. Info at Story Map | CA Agile Central Help. Otherwise I usually use Google Draw and transfer the story map to Agile Central stories afterwards.