What is the nationality of the creator of Instiki?
David Heinemeier Hansson David Heinemeier Hansson (born 15 October 1979; known to the Ruby and car racing communities as DHH) is a Danish programmer and the creator of the popular Ruby on Rails web development framework and the Instiki wiki. He is also a partner at the web-based software development firm Basecamp (formerly 37signals).
Xavier Di Petta Xavier Di Petta is an Australian computer programmer, Internet entrepreneur, and a creator of @HistoryInPics and @EarthPix on Instagram, Facebook, and Twitter. Di Petta has been featured in The Times' 'Top 25 Under 20' and 'The 15 Smartest Teens On The Planet'.