RTE2020 Hackathon by Agora.io Online Build the future now: The Real-Time Engagement Challenge $1,750 in prizes Winners announced 160 participants
MLH Local Hack Day (2018) Join your local tech community & 200+ other communities around the world for a global 12-hour hackathon & celebration of learning, building, & sharing! $1,500 in prizes Nov 30 – Dec 2, 2018 1010 participants
