Arbiter Hacks V1 Online Open innovation for all, submit projects that have potential impact and usability! $7,800 in prizes Dec 21, 2026 12:00 AM EST to submit 981 participants
NextSpark Hacks Online Bring your ideas to life at NextSpark Hacks, A hackathon where builders of all skill levels come together to learn, create and tackle real world problems through technology. $100 in prizes Winners announced 293 participants
Neighborhood Hacks Online Create a project that supports your local community $57,866 in prizes Winners announced 645 participants
Los Altos Hacks X Sunnyvale, CA, USA The world's largest high school hackathon. Non-monetary prizes Apr 11 – 12, 2026 278 participants