Box Box is extremely similar to Dropbox, as both companies offer cloud content management services and file sharing for consumers, but Box goes about it a slightly different way. Led by CEO Aaron Levie, the Los Alto, Calif.-based Box caters more toward businesses and enterprise then Dropbox does currently. Box has more than 120,000 company clients, including Dell ( DELL), and caters more toward productivity apps that sync up with Box and make it easier to share outside of Box, on places such as Facebook ( FB) or LinkedIn ( LNKD). Box also offers free storage, starting at 5GB worth, but you have to pay if you want to drop files from your computer into your Box account, a stark change from Dropbox. It's not known how much Box is generating in annual revenue, but a recent private equity funding round valued the company between $1.2 billion and $1.5 billion. In a recent interview with Reuters, CEO Levie has said the company probably will go public at some point.