Slack’s founding team of Stewart Butterfield, Eric Costello, Cal Henderson and Serguei Mourachov wins the 2015 Crunchies Award for Founder of the Year (other nominees: Stripe’s John and Patrick Collison; Elizabeth Holmes of Theranos; WhatsApp’s Brian Acton and Jan Koum; Mikkel Svane, Alexander Aghassipour and Morten Primdahl of Zendesk).