Join Web Hackathons 2026

Join web hackathons to build modern applications, sites, and tools for the open internet.
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IN-PERSON CSC Hacks 2026

March 2, 2026

Date TBD

CSC Hacks is a hackathon hosted by the Computer Science Club at the University of Pittsburgh!The challenge is simple: take a complex idea and build …

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beginner · web · In-person
ONLINE PIXEL.GEMINI

March 1, 2026 - March 2, 2026

Ended

PIXEL.GEMINI is an official MLH Hack Day organized by TRISHULX, focused on empowering students to build innovative applications using Google’s Gemini AI. This hackathon brings …

IN-PERSON LovHack x Medo Hackathon

Feb. 28, 2026 - March 2, 2026

Ended

LovHack x Medo Hackathon is a free, 48-hour online hackathon where builders of all levels come together to design, prototype, and ship real applications. Participants …

IN-PERSON hackTAMS 2026

Feb. 28, 2026 - March 1, 2026

Ended

HackTAMS is an annual hackathon organized by students at the Texas Academy of Mathematics and Science. A hackathon is a coding marathon where students design, …

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beginner · web · In-person
ONLINE The Galactic Archives

Feb. 27, 2026

Date TBD

About the challenge Mission Briefing Greetings, Data Explorer. You have been granted top-level clearance to the newly declassified Galactic Archives. Your mission, assigned by Stellar …

IN-PERSON Smart Innovation 2026

Feb. 23, 2026 - March 21, 2026

Ended

Smart Innovation 2026 – Registration Open

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iot · robotics · web · In-person
ONLINE Grizzly Hacks II

Feb. 21, 2026 - Feb. 22, 2026

Ended

Grizzly Hacks is an organization that engages in hosting community hackathons created for high school students who want to challenge themselves, build meaningful projects, and …

IN-PERSON DeerHacks V

Feb. 20, 2026 - Feb. 22, 2026

Ended

About the challenge DeerHacks V celebrates five years of innovation, creativity, and collaboration! Join us for 36 hours of coding, designing, and problem-solving at UofT …

IN-PERSON 757 BLD WKND 2026

Feb. 20, 2026 - Feb. 22, 2026

Ended

If you like to build and create, this event is for you. Picture a vibrant space where entrepreneurs, students, and professionals converge to build whatever …

ONLINE hatrek

Feb. 17, 2026 - April 17, 2026

Ended

About the Challenge This is an open-ended Machine Learning web challenge where innovation has no limits. Build any ML-powered web application that solves a real …

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