Headquarters: San Francisco
Year founded: 2011
Why it's revolutionary: Stitch Fix eliminates the hardest part of shopping: making choices. With its services, women don't have to step foot inside a store or browse shopping websites to find clothes they like.
The company's stylists curate items for customers based on an extensive profile of their style preferences, sizing, and body types, and send them a box of selections every month. Customers can try on the clothes at home and send back whatever they don't want to keep.
Over time, the service gets increasingly accurate in predicting specific customers' style preferences, thanks to an algorithm that learns from customer feedback.