monday apps challenge Online Build a better way for teams to work $180,000 in prizes Winners announced 1522 participants
PerkinsHacks 2018 Watertown, MA, USA PerkinsHacks: Solving real problems for real people $2,100 in prizes Apr 13 – 14, 2018 85 participants
International Development Hackathon 2018 Somerville, MA, USA #idhackit because ... $1,500 in prizes Feb 9 – 10, 2018 44 participants
