Thanks to its elegant interface, deft courting of new users, and a knack for putting its cute box icon everywhere, Dropbox keeps growing, even as it competes with Apple and Google. Its growth—revenue reportedly exceeded $100 million in 2011, driving the company to profitability—can be credited with making file storage kind of cool. From the start, says CEO Drew Houston, "we focused on creating a service that just works." So far, so good.
PHOTOGRAPH BY FLICKR USER NICK PEREZ