Find Your Next Coding Challenge

Las Vegas Convention Center, Las Vegas, NV, USA

ARC Prize 2026 — ARC-AGI-2

by ARC Prize Foundation

ETHGlobal Lisbon 2026

by ETHGlobal

$125K

Jul 24 - Jul 26, 2026

Pavilhao Carlos Lopes, Lisbon, Portugal

Build with Gemini — XPRIZE

by XPRIZE

$2.0M

May 19 - Aug 17, 2026

Open

Browse by Category

From CTFs to hackathons, find the perfect challenge for your skill level.

342 events

Capture The Flag

Security competitions with puzzles in web, crypto, pwn, and reversing.

528 events

Bug Bounty

Find vulnerabilities in real applications and earn rewards.

285 events

Hackathons

Build innovative projects in intense 24-48 hour sprints.

892 events

Coding Contests

Algorithmic programming challenges to test your skills.

156 events

Conferences

Talks, workshops, and networking with the community.

89 events

Grants & Fellowships

Funding and mentorship for open source maintainers.

124 events

OSS Bounties

Contribute to open source and earn bounties.

Happening Soon

Bug Bounty

Optimism Bug Bounty Program

by Immunefi

$2.0M

Jan 14 - Dec 31, 2099

Advanced

Bug Bounty

Usual Labs Bug Bounty

by Sherlock

$16.0M

Apr 8 - Dec 31, 2099

Advanced

Grant

Solana Foundation Grants

by Solana Foundation

Jan 1 - Dec 31, 2099

Open

Grant

Ethereum Foundation Ecosystem Support Program (ESP)

by Ethereum Foundation

Jan 1 - Dec 31, 2099

ARC Prize 2026 — ARC-AGI-2

by ARC Prize Foundation

Build with Gemini — XPRIZE

by XPRIZE

$2.0M

May 19 - Aug 17, 2026

Open