Dropbox is best known as a cloud storage service. It lets you store everything safely in the cloud and access file uploads from multiple devices. Dropbox is very useful in the design phase of your Digital Social Impact course because it also offers some collaboration tools. For example, you and your students or stakeholders can add comments to files and create shared to-do lists. These functions are available with all Dropbox individual user plans (including both free and paid versions) and team accounts for business.