Web Dev Challenge Hackathons
Past Hackathons
Check out previous challenges and see what others built.
Let’s make the world a little less isolated and build an app that brings people together. Submit by midnight on April 19 to participate.
Build an app to help people build by midnight on April 6. Earn CodeTV swag and learn something new with friends!
Build a playful app by midnight on March 23 to get CodeTV swag and learn something new with friends!
In this challenge, build a custom AI voice hotline using ConversationRelay. Hotlines due Friday, November 21, 2025.