UXDC Designathon - 2026 Online UCalgary's first UI/UX club is hosting a 24-hour Designathon! $200 in prizes Winners announced 81 participants
Hack the Change 2026 Calgary, Canada Hack the Change 2026 is a hybrid two-day for-charity hackathon with the mission of coding a better world together. $CAD 5,700 in prizes Nov 7 – 8, 2026 204 participants
OpenAI Open Model Hackathon Online Build with gpt-oss, OpenAI’s open weight reasoning models. $30,000 in prizes Winners announced 8633 participants
DevNetwork [API + Cloud + Data] Hackathon 2025 Santa Clara, CA, USA Join the nation's largest challenge-driven API + Cloud + Data hackathon @ API World 2025! $2,000 in prizes Aug 17 – Sep 5, 2025 712 participants