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David Heinemeier Hansson (born 1979 in Copenhagen) is a Danish programmer and the creator of the popular Ruby on Rails web development framework and the Instiki wikis. He is also a partner at the web-based software development firm 37signals.

Received the Google/O'Reilly Hacker of the Year Award for 2005 for his creation of Ruby on Rails

David appeared on the cover of the July 2006 issue of Linux Journal which included an interview with him in the feature story "Opinions on Opinionated Software." The same month Business 2.0 ranked him 34th among "50 people who matter now."

Source: http://en.wikipedia.org/wiki/David_Heinemeier_Hansson