Context.IO App Challenge Online Email is the data source. Context.IO is the tool. What you build with it is up to you! $125,000 in prizes Winners announced 486 participants
FLIR's "Bring the Heat" Hacker and Maker Challenge (SanFran) San Francisco, CA, USA Infrared Everywhere! Change the world with thermal imaging. $17,000 in prizes Jun 26 – 28, 2015 74 participants
Salesforce $1 Million Hackathon 2014 San Francisco, CA, USA BUILD THE BEST MOBILE APP $995,000 in prizes Oct 10 – 12, 2014 715 participants