Dropbox is a free service that allows users to access and sync files across all of their devices. Any file saved to the Dropbox folder on a computer is automatically synced to all other computers, phones, and the Dropbox website. The Dropbox folder works just like any other folder but syncs files between all linked devices. Dropbox uses icons to indicate file sync status and provides right-click options like sharing folders, viewing file versions, and generating public links.