Open Source Hackathons
Explore 72 open source hackathons. Hackathons contributing to open source projects, developer tools, and community-driven software.
Hackathons
65
Avg Prize
$32K
Organizers
48
Tuesday, October 6, 2026
Ongoing
NSCC Open Hackathon
Hybrid
Sep 29 – Oct 9, 2026Singapore, Singapore
Open Source
Innovation
Community
Ongoing
Open Source Sprint - Hyderabad's Largest Open Source Hackathon
In Person
Sep 21 – Oct 14, 2026Unifesto Private LimitedHyderabad, India
Open Source
Cloud
Edtech
Ongoing
HACK47: OFFGRID
Online
Sep 15 – Oct 15, 2026Hack47Online
Artificial Intelligence
Open Source
Web Development
Ongoing
CodeSprint by Elite Coders
Online
Sep 25 – Oct 15, 2026Elite CodersOnline$360
Open Source
Artificial Intelligence
Ongoing
Hacktoberfest × BFIT 2026
Hybrid
Oct 5 – Oct 16, 2026BFIT Group of InstitutionsDehradun, India
Undergraduate
Postgraduate
Engineering Students
Ongoing
Build 2026 x ByteAsk (YC F26): Open-Source Challenge | $30,000 in Rewards
Online
Sep 27 – Oct 23, 2026HackyardOnline$240
Open Source
Artificial Intelligence
Edtech
Ongoing
Build, Ship, Shape: Amazon Developer Hackathon
Online
Aug 31 – Oct 23, 2026AmazonOnline$138K
Cloud
Artificial Intelligence
Open Source
Ongoing
Nebius x NVIDIA Global AI Hackathon
Online
Aug 26 – Oct 30, 2026NebiusOnline$50K
Artificial Intelligence
Cloud
Open Source
Ongoing
Codesprint 2026
Hybrid
Sep 23 – Oct 30, 2026Elite CodersDehradun, India$360
Open Source
Cloud
Edtech
Ongoing
Open Source Impact
Online
Sep 30 – Oct 31, 2026Student OrganizationOnline
Beginner Friendly
Open Ended
Web Development
Ongoing
Anna AI App Builder Program
Online
Aug 1 – Oct 31, 2026Anna AIOnline$6K
Artificial Intelligence
Open Source
Ongoing
Speed Demon 2026 — Every Millisecond Is a Soul: Five Tracks, One Machine
Online
Oct 1 – Oct 31, 2026RaptorsOnline
Innovation
Community
DevOps
Ongoing
Google - The Gemma 4 Developer Agent Paper Track
Online
Sep 23 – Nov 12, 2026Google DeepMindOnline$35K
Artificial Intelligence
Open Source
Research
Ongoing
DevHack 2026
In Person
Sep 21 – Nov 14, 2026Sahyadri College of Engineering & Management (SCEM), MangaluruMangaluru, India$1K
Social Impact
Open Source
Cloud
Ongoing
Digit Recognizer
Online
Jul 25, 2012 – Jan 1, 2030KaggleOnline
Artificial Intelligence
Machine Learning
Data Science
Thursday, October 8, 2026
Upcoming
XploitX 2.0 Beta – CTF
In Person
Oct 8 – Oct 9, 2026Department of Cyber Security, Prathyusha Engineering CollegePrathyusha Engineering College, India$100K
Cybersecurity
Artificial Intelligence
Open Source
Upcoming
Recursive
In Person
Oct 8, 2026Panihati, India
Web Development
Artificial Intelligence
Machine Learning
Saturday, October 10, 2026
Sunday, October 11, 2026
Past hackathons
Recently ended — many run again.
Sunday, October 4, 2026
Saturday, October 3, 2026
Past
Hacktoberfest Hack Day Verges x Empordànerds
In Person
Oct 3, 2026Empordànerds (via Major League Hacking)Verges, Spain
Hackathon
Open Source
Past
Hacktoberfest Hack Day Dinajpur
In Person
Oct 3, 2026Machine Learning BangladeshTBA
Open Source
Artificial Intelligence
Edtech
Past
Jev Hack/Demo Night | Birds of a Feather
In Person
Oct 3, 2026tinyfishSan Francisco, United States
Artificial Intelligence
Open Source
Cloud
