Open Source Hackathons
Explore 37 open source hackathons. Hackathons contributing to open source projects, developer tools, and community-driven software.
Hackathons
35
Avg Prize
$83K
Organizers
29
Sunday, November 15, 2026
Ongoing
Dakar Bitcoin Hack by BTrust
Online
Oct 26 – Nov 20, 2026Dakar Bitcoin DaysOnline$901K
Blockchain
Fintech
Open Source
Ongoing
Codesprint 2026
Hybrid
Sep 23 – Nov 22, 2026Elite CodersDehradun, India$360
Open Source
Cloud
Ongoing
Code Sprint
Hybrid
Oct 14 – Nov 22, 2026University of Petroleum & Energy Studies (UPES), DehradunDehradun, India$360
Open Source
Ongoing
DoomForge
In Person
Nov 2 – Dec 6, 2026Vellore Institute of Technology (VIT), ChennaiChennai, India
Open Source
Ongoing
Open Agentic Web Challenge
Online
Nov 12, 2026 – Jan 11, 2027CognizantOnline$10K
Artificial Intelligence
Open Source
Web Development
Wednesday, November 18, 2026
Past hackathons
Recently ended — many run again.
Saturday, November 14, 2026
Wednesday, November 11, 2026
Tuesday, November 10, 2026
Sunday, November 8, 2026
Saturday, November 7, 2026
Monday, November 2, 2026
Saturday, October 31, 2026
Past
Hacktoberfest Hack Day Portland x Portland AI Devs
In Person
Oct 31, 2026Portland, Oregon, United States
Open Source
Past
Hacktoberfest Hack Day Mikkeli x Hacklab Mikkeli ry
In Person
Oct 31, 2026Hacklab Mikkeli ryMikkeli, Finland
Artificial Intelligence
Open Source
Past
Hacktoberfest Hack Day Esbjerg
In Person
Oct 31, 2026Cod3rs und IT Women Esbjerg (unterstützt von Major League Hacking)Esbjerg, Denmark
Open Source
Past
Mergetober
Online
Oct 31 – Nov 1, 2026Hacker's UnityOnline
Artificial Intelligence
Open Source
