HackOut! 2027 Online Technology for Good $3,000 in prizes Feb 01, 2027 12:00 AM EST to submit 39 participants
Open Agentic Web Challenge Online Join the global initiative to help build the infrastructure and first pages of the open agentic web $10,000 in prizes Jan 11, 2027 11:00 AM EST to submit 531 participants
Codegeist 2026: Build with context. Ship with confidence. Online Build on Forge, extend Atlassian products, and turn connected context into powerful new apps for teams — win your share of $120K. $120,000 in prizes Dec 22, 2026 03:00 PM EST to submit 3341 participants
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 1123 participants
Silicon Valley Buildathon Online Take a rough idea off the workbench, turn it into a working prototype, and show what it can do at Silicon Valley Buildathon. $500 in prizes Dec 15, 2026 11:45 PM EST to submit 114 participants
QNX Global Hackathon Online The power to shape the world $50,000 in prizes Dec 15, 2026 02:00 PM EST to submit 1539 participants
Reddit’s Game of the Day Hackathon Online Join Reddit to build incredible daily games! $35,000 in prizes Dec 08, 2026 09:00 PM EST to submit 1117 participants
Learn AR with SPECS Online Learn to design for glasses. Your coding agent builds the Lens, no SPECS required. $2,500 in prizes Dec 07, 2026 05:00 PM EST to submit 196 participants
Kiroween 2026 Featured Online Build something wicked and git commit to the darkness. $100,000 in prizes Dec 04, 2026 05:00 PM EST to submit 13735 participants
#BuildHybridAI 2026 Online Build AI apps that run on-device and in the cloud with Firebase AI Logic. $30,000 in prizes Nov 30, 2026 05:00 PM EST to submit 2117 participants
UGREEN Hackathon 2026 on AI NAS Featured Online Bring Your Skills to UGOS $46,000 in prizes Nov 16, 2026 02:45 AM EST to submit 2492 participants
