Drew Houston

Drew Houston founded Dropbox in 2007 after repeatedly forgetting his USB drive on the Boston-to-New York Chinatown bus. That frustration became one of the most important cloud storage companies in history. Dropbox's dead-simple interface — drag a file into a folder and it syncs everywhere — made cloud storage accessible to normal people years before Google Drive or iCloud existed.

Houston's growth strategy was masterful. The referral program that gave users free storage for inviting friends drove viral growth from 100K to 4M users in 15 months without traditional advertising. Steve Jobs offered to buy Dropbox and, when Houston declined, reportedly told him Apple would build a competitor to destroy it. Houston went public in 2018, and Dropbox now serves 700M+ registered users.

Dropbox was also the Y Combinator application that Paul Graham has called 'the best we ever got.' Houston's demo video — a simple screencast showing files syncing between computers — generated 75K signups overnight, before any product existed. It remains a textbook example of how to validate a startup idea.