David Heinemeier Hansson
David Heinemeier Hansson is a partner at 37signals, a privately-held Chicago-based company committed to building the best web-based tools possible with the least number of features necessary.
37signals’ products include Basecamp, Highrise, Backpack, Campfire, Ta-da List, and Writeboard. 37signals’ products do less than the competition — intentionally.
He is also the creator of Ruby on Rails.