Yuriy Dybskiy (html5cat)

Building @PumaBrowser. Formerly Developer Advocate @Lyft, @ParseIt + @Facebook, @meteorjs, @IBMcloudant

OpenAI Build Week

Online

Join a global week of building with Codex

$100,000 in prizes
Winners TBD
46784 participants

Agentic Orchestration Hack

San Francisco, CA, USA

We’ve stacked real infra and real AI so your hack ships as a product, not a slide. In one sprint, build agents, copilots, and autonomous systems that actually work end to end.

$29,300 in prizes
Jan 16, 2026
170 participants

World’s Largest Hackathon presented by Bolt

Online

Build with AI for a shot at some of the $1M+ in prizes.

$1,037,500 in prizes
Winners announced
128359 participants

The UX/AI Hackathon

Hillsborough, CA, USA

Revolutionizing User Interfaces

$3,000 in prizes
Sep 16, 2023
61 participants

EthCC Hack 2022

Online

Hacking away in the City of Light towards Regen Summer.

$236,991 in prizes
Winners announced
803 participants

NEAR MetaBUILD Hackathon

Online

A better future requires a better foundation. Build apps capable of taking millions of users on journeys they’ve never been on before. Simple. Scalable. Secure.

$1,000,005 in prizes
Winners announced
3830 participants

PayString Hackathon

Online

Make money move like email.

$26,000 in prizes
Winners announced
350 participants

The Square Small Business Hackathon

Online

Build software applications that help small businesses adapt and recover.

$36,000 in prizes
Winners announced
491 participants

COVID-19 Global Hackathon 1.0

Online

#BuildforCOVID19 Global Online Hackathon

Non-monetary prizes
Winners announced
18551 participants

DeFi Hackathon

San Francisco, CA, USA

How will you change the future of finance?

$113,000 in prizes
Oct 31 – Nov 3, 2019
155 participants

ETH San Francisco

San Francisco, CA, USA

ETHSanFrancisco - World's Biggest Ethereum Hackathon

$183,500 in prizes
Oct 5 – 7, 2018
375 participants

YC Hackathon [Private Event]

YC's April 2018 Hackathon

Non-monetary prizes
Apr 13 – 14, 2018
35 participants

AWS Chatbot Challenge

Online

Create conversational, intelligent chatbots using Amazon Lex and AWS Lambda!

$19,797 in prizes
Winners announced
3849 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

Pebble App Challenge

Online

A showdown of apps!

$8,984 in prizes
Winners announced
327 participants