Kiroween 2026 Online Build something wicked and git commit to the darkness. $100,000 in prizes Dec 04, 2026 05:00 PM EST to submit 7770 participants
STEM2Connect AI Hackathon Online Build AI-powered solutions to real-world challenges in education, healthcare, sustainability, scientific research, and community impact. Non-monetary prizes Nov 21, 2026 11:59 PM EST to submit 305 participants