Organizers & Platforms
Discover the top organizations running coding competitions, bug bounties, and hackathons worldwide.
Research nonprofit; runs ML interpretability challenges on AIcrowd.
Nonprofit behind the ARC-AGI abstract-reasoning benchmark and prize.
Japanese competitive programming platform (ABC, ARC, AGC, AHC).
Premier international information-security conference series.
CNCF; hosts KubeCon + CloudNativeCon.
Carnegie Mellon University security education (picoCTF).
Competitive programming contests (Starters, Cook-Off, Lunchtime).
Competitive programming contests and rating ladder.
The CTF community and event tracker.
The world's largest hacker convention.
The home for hackathons.
Cloud platform; organizer of Hacktoberfest.
Australia/NZ's largest capture-the-flag competition.
Data-science competitions for social impact.
Nonprofit supporting Ethereum; runs the Ecosystem Support Program.
Global Ethereum hackathon series.
GitHub Accelerator and OSS programs.
Google CTF and security programs.
Hacker-powered security platform.
Toronto's largest summer student hackathon (MLH member).
The leading bug bounty platform for Web3.
CTF team and organizer of the annual L3akCTF.
Coding interview practice and weekly/biweekly contests.
The official student hackathon league.
Paid, remote open-source internships for underrepresented people in tech.
Alibaba Cloud's Qwen AI platform and hackathons.
International CTF team and host of R3CTF.
Smart-contract audit contests and bug bounties.
University of Illinois Urbana-Champaign cybersecurity club; runs UIUCTF.
Nonprofit supporting the Solana blockchain ecosystem and grants.
Open-source foundation; runs the LFX Mentorship program.
Global incentive-prize competitions for breakthrough innovation.