Support open source and pick a limited edition T-shirt or plant a tree.
start hackingEvent details
Hacktoberfest® is open to everyone in our global community. Whether you’re a developer, student learning to code, event host, or company of any size, you can help drive growth of open source and make positive contributions to an ever-growing community. All backgrounds and skill levels are encouraged to complete the challenge.
- Hacktoberfest is a celebration open to everyone in our global community.
- Pull requests can be made in participating GitHub-hosted repositories/projects, classified with the Hacktoberfest topic.
- You can sign up anytime between October 1 and October 31.
Rules
To earn your Hacktoberfest tee or tree reward, you must register and make four valid pull requests (PRs) between October 1-31 (in any time zone). PRs can be made to participating public repos on GitHub, those that have the Hacktoberfest topic. If a maintainer reports your pull request as spam or behavior not in line with the project’s code of conduct, you will be ineligible to participate. This year, the first 70,000 participants who successfully complete the challenge will be eligible to receive a prize.
Read the participation details to learn how to earn your Hacktoberfest tee or tree reward.
Hacktoberfest projects
You can contribute to participating projects on GitHub. Here are a few looking for some help:
Covid-19-d3
JavaScriptCreated with CodeSandbox
Format Text Data
Data-Structures-and-Algorithms
C++Data Structures and Algorithms implemented In Python, C/C++, Java or any other language. Give a Star 🌟 if it helps you.
Graph Dfs Application
casa
RubyVolunteer management system for nonprofit CASA, which serves foster youth in counties across America.
Should be able to mark hearing type as inactive
jina
PythonAn easier way to build neural search in the cloud
Bug in RecallEvaluator
ritchie-cli
GoRitchie CLI is an open source tool that allows to create, store and share any kind of automations, executing them through command lines, to run operations or start workflows ⚙️ 🖥 💡
[BUG] Files created by the formula belonging to the root user
LeetCode-Solutions
C++A compilation of all the Leetcode solutions.
49 | Group Anagrams | C++
time-to-leave
JavaScriptLog work hours and get notified when it's time to leave the office and start to live.
Space better the cells in Flexible Month view
mangahost_navbar_fix
JavaScriptBrowser Plugin
mouse hover showing or transparency in navbar over only hiding
circulate
RubyAn operating system for lending libraries
Fix renewal of A tools
Projects focused on climate change & COVID-19 relief
Featured projects focused on tackling climate change and supporting the fight against COVID-19.
danieljcode / COVID-19tracker
HTMLA live COVID-19 tracker website
luvi / caricovidsite
JavascriptCaribbean focused COVID-19 case map www.caricovidmap.com
disease-sh / API
JavascriptAPI for Current cases and more stuff about COVID-19 and Influenza
Global events
Celebrate and support open source technology by organizing or attending a virtual event in October.
See more events
From DigitalOcean
Now in its 7th year, Hacktoberfest has become an integral thread in our company fabric. We wouldn’t be here without the passionate community and helpful partners that make this program such a spectacular event. A big thank you to all that are joining for the first time and those that keep coming back year after year.

