TechCrunch Disrupt London Where Great Products Are Born in 24 Hours $18,600 in prizes Dec 5 – 6, 2015 325 participants
Atlassian Codegeist: Add-on Hackathon Online Atlassian Add-on Hackathon:Extend JIRA, Confluence, HipChat or Bitbucket $100,000 in prizes Winners announced 872 participants
