Sharing and accessing files online among an unlimited number of computers is one of the hallmarks of Dropbox.
In August 2010, Dropbox co-founders and MIT Alumni, Drew Houston and Arash Ferdowski, filed a patent for network folder synchronisation. This patent details the process of how multiple clients can share and synchronise folders and their content across the network. If a user makes changes to files in the dropbox, these changes are synchronised to the host server, allowing other users to also view the current version of the synchronised folder and contents.
Network folder synchronisation is still an integral component of Dropbox, and why it is so popular among individuals and businesses all over the world.