Explore Open Hackathons 2026

Open hackathons welcome creators of all backgrounds, skills, and ideas to collaborate freely.
Explore Open hackathons online and in-person
ONLINE i-DEMO EUROPEAN TOURISM GAMIFICATION HACKATHON 2026

Nov. 27, 2026 - Nov. 29, 2026

Upcoming

The i-DEMO European Tourism Gamification Hackathon 2026 is an online, international and multidisciplinary event taking place from Friday, November 27th, to Sunday, November 29th, 2026, …

IN-PERSON Leicester · 01 · AI Mobile App Hackathon

Nov. 18, 2026 - Nov. 18, 2026

Upcoming

The first Build Room in Leicester: an evening of hands-on building on Wednesday 18 November 2026, 18:00 to 21:30. Pick an idea, build a working …

IN-PERSON Lollypop Designathon 2026

Nov. 14, 2026 - Nov. 15, 2026

Upcoming

​Lollypop Designathon 2026 – Global Edition is officially open for registration! ​This year’s Designathon marks a new milestone: an international design competition taking place right …

ONLINE Craftable 3D Website Challenge

Nov. 1, 2026 - Dec. 31, 2026

Open

The Craftable 3D Website Challenge is a free online competition. Build one 3D website with Craftable, an AI website builder with a free plan, daily …

IN-PERSON Hacktoberfest México @ Mexico Tech Week

Oct. 27, 2026 - Oct. 28, 2026

Ended

Hacktoberfest México es el hackathon de IA open source y modelos open-weight de Mobil3 con MLH, dentro de Mexico Tech Week. Día 1 (martes 27 …

IN-PERSON Builder.io’s Agent-Native Hackathon

Oct. 26, 2026 - Nov. 9, 2026

Ended

Build an AI agent app this weekend and compete for $10K 🚀 Builder.io’s Agent-Native Hackathon is open to developers worldwide, and students are welcome. Build …

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ai · In-person
IN-PERSON Total Recall

Oct. 20, 2026 - Nov. 10, 2026

Ended

Total Recall — Tatum × Walrus Memory Get your memory back. Three weeks to ship an app that actually remembers: scores, preferences, and reasoning that …

IN-PERSON Test Flight: Glasswing Ventures AI Hackathon

Sept. 26, 2026 - Sept. 27, 2026

Ended

Test Flight is a two-day, in-person AI hackathon hosted by Glasswing Ventures at 275 Newbury Street in Boston on September 26 and 27, 2026. One …

IN-PERSON eSiM-A-THON

Sept. 26, 2026 - Sept. 26, 2026

Ended

𝗲𝗦𝗶𝗺-𝗔-𝗧𝗛𝗢𝗡 '𝟮𝟲 | Electronic System Innovation Marathon India needs semiconductor engineers. Not five years from now — now. As part of Euphoria 2026 (https://lnkd.in/gEZuD-9R) national-level …

ONLINE Build with Stripe Community: Simplify building your tech stack with AI

Sept. 16, 2026 - Sept. 16, 2026

Ended

A free 90-minute online session and hackathon. Bring an idea and build it live with AI. A short talk followed by a hands-on build using …

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