Hacks for Humanity 2022 Online Hacking for the social good $10,300 in prizes Winners announced 315 participants
Chirp Developer Challenge Online Build an app using Twitter’s API v2 to unlock new experiences for people on Twitter, and inspire other developers. $520,600 in prizes Winners announced 1604 participants
Chronic Pain Australia Hackathon Ultimo, Australia The world’s first Hackathon for Chronic Pain $6,300 in prizes May 20 – Jun 3, 2016 20 participants
