OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners TBD 46770 participants
Kiroween Online Build something wicked for Kiroween, our annual Halloween-themed hackathon where developers dare to code in dark mode $100,000 in prizes Winners announced 4973 participants
Build Resilient Apps with Polkadot Cloud Online Radically open, radically useful $40,000 in prizes Winners announced 2725 participants
RevenueCat Shipaton 2025 Online Ship apps and start making money. $355,000 in prizes Winners announced 51885 participants
IndiaAI Impact Gen-AI Hackathon Online Learn, explore, build Gen-AI Solutions for India Non-monetary prizes Winners announced 3285 participants
Bay2BayHacks 2025 Online Develop an AI-based app that contributes to societal betterment. $57,524 in prizes Winners announced 543 participants
Medi-Hack Online Create a tool that can revolutionze the healthcare industry using AI Non-monetary prizes Winners announced 279 participants
Recess Hacks 5.0 Canada Student-Run Online Hackathon For High Schoolers and Recent Graduates $CAD 20,410 in prizes Aug 23 – 24, 2025 149 participants
NeuraViaHacks Online Capture Medical Data to Construct Interactive Software for large prizes. $1,025 in prizes Winners announced 605 participants
Hack2Impact 25 (updated version) Online Make a positive impact or solve a real-world problem. $30 in prizes Winners announced 48 participants
Perplexity Hackathon Online Create an internet-enabled project to inspire curiosity, seek knowledge, or reason through complex tasks. $35,000 in prizes Winners announced 4355 participants
Knurld Hackathon Online Add cutting-edge Voice Authentication technology to your existing Android, iOS, or IoT application $12,950 in prizes Winners announced 332 participants
Samsung Makers Against Drought Challenge Online Makers Against Drought $210,500 in prizes Winners announced 547 participants
Context.IO App Challenge Online Email is the data source. Context.IO is the tool. What you build with it is up to you! $125,000 in prizes Winners announced 486 participants
Oculus' Mobile VR Jam 2015 Online Let's jam. It's time to create new worlds that go anywhere with the Gear VR Innovator Edition. $1,020,000 in prizes Winners announced 1697 participants
20 Lines of JS Challenge Online Show us your best JavaScript hack in under #20lines of code! $284 in prizes Winners announced 87 participants
Samsung Gear App Challenge Online Your world. Your wrist. Create the best Samsung Gear App and change your universe. $400,000 in prizes Winners announced 2728 participants
appbackr Tizen Challenge Online HTML5 Developers - Win Cash Prizes When You Add Your Apps to the New Tizen Store $20,650 in prizes Winners announced 163 participants
appbackr HTML5 to Tizen Challenge Online Get Your HTML5 app on Tizen Fast and With No Effort $75 in prizes Winners announced 60 participants
Impress.js: Beyond the Presentation Online Reinvent the presentation. Use impress.js and the power of CSS3 transforms and transitions to create a presentation for the modern browser. $1,200 in prizes Winners announced 168 participants
The Tactrick Android Developer Cup Online The Tactrick Android Developer Cup challenged brainy Android developers. Prove yourself as the best app developer. $13,000 in prizes Winners announced 416 participants
AllJoyn™ Peer-2-Peer App Challenge Online Developers built innovative, peer-to-peer mobile apps using the AllJoyn SDK and won cash & prizes with a total value of over $170,000. $171,495 in prizes Winners announced 400 participants
