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