Tobias Lütke

Shopify. Lütke wanted to sell snowboards online in 2004 and, finding the available shop software poor, wrote his own in Ruby on Rails with co-founder Scott Lake. Opened to other merchants in 2006, Shopify let a one-person business run a proper online shop without a developer, and its app store and payments followed. He is still chief executive and remains closely involved in the product.