Hack for LA Los Angeles, California, USA Create innovative apps to solve LA's community challenges! $24,650 in prizes Jun 1 – 2, 2013 137 participants
Apps for Energy Online The U.S. Energy Department’s Apps for Energy offered $100,000 to software developers for the best new apps that help utility customers make the most of their Green Button electricity usage data. $100,000 in prizes Winners announced 470 participants