Dropbox is a free web-based application that allows users to access, upload, and share files from any location through mobile devices and computers. Users can store files like documents, images, and music in their Dropbox folder and share access with friends or coworkers to collaborate on projects. To use Dropbox, a user creates an account by providing an email and password on the Dropbox website and downloads the Dropbox application to their computer. Files can then be added to the Dropbox folder by dragging them into the folder, and will automatically sync across the user's devices. Users can also upload files from the Dropbox website or import photos from mobile devices. Dropbox makes it easy for users to share folders with others by inviting them through email.