Support open source and earn a limited edition T-shirt!
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 open to everyone in our global community!
- Pull requests can be made in any GitHub-hosted repositories/projects.
- Sign up anytime between October 1 and October 31.
Rules
To qualify for the official limited edition Hacktoberfest shirt, you must register and make four pull requests (PRs) between October 1-31 (in any time zone). PRs can be made to any public repo on GitHub, not only the ones with issues labeled Hacktoberfest. 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 50,000 participants who successfully complete the challenge will earn a T-shirt.
Read more about participation details.
Hacktoberfest projects
You can contribute to any project on GitHub. Here are a few looking for some help:
Displaying all Hacktoberfest projects
matomo
PHPLiberating Web Analytics. Star us on Github? +1. Matomo is the leading open alternative to Google Analytics that gives you full control over your data. Matomo lets you easily co...
Allow reenabling cookies
react-rails
JavaScriptIntegrate React.js with Rails views and controllers, the asset pipeline, or webpacker.
Permanent Turbolinks components without a specified cache ID will be loaded for all components without a cache ID
hugo
GoThe world’s fastest framework for building websites.
Slash issue in themesDir and similar settings
dotty
ScalaResearch compiler that will become Scala 3
Missing error messages
PowerShell
C#PowerShell for every system!
CI check for files encoding
sentry
PythonSentry is cross-platform application monitoring, with a focus on error reporting.
Prevent Referer leaking on password reset page
mycroft-core
PythonMycroft Core, the Mycroft Artificial Intelligence platform.
Add basic testcases for the audioservice interface
java-design-patterns
JavaDesign patterns implemented in Java
Maven build fail - Project "image-microservice" pom.xml lack of version field
ODM
PythonA command line toolkit to generate maps, point clouds, 3D models and DEMs from drone, balloon or kite images.
[Feature Request] Corner Point Coordinates for input images
Projects focused on climate change
Because we believe open source technology has the potential to change the world, we wanted to showcase a few projects focused on combating climate change:
climate
Jupyter NotebookMirror of Apache Open Climate Workbench
contributor_covenant
CSSPledge your respect and appreciation for contributors of all kinds to your open source project.
tmrowapp-contrib
JavaScriptTomorrow automatically calculates the climate impact of your daily choices by connecting to apps and services you already use.
Global events
Celebrate and support open source technology by organizing or attending a local event.
Words from our sponsors
We’re so excited to partner with DEV – an open source community platform built for developers of all backgrounds and experience levels – for this year’s Hacktoberfest. As a torch-bearer for open source, transparency, and inclusion in tech, DEV fully embodies the Hacktoberfest values. Check out the #Hacktoberfest tag on DEV for announcements and resources before, during, and after the event.
As participants long before we became sponsors, we’re thankful to our friends at DigitalOcean for creating Hacktoberfest. As an advocate of developers and startups, their cloud platform uniquely hits on both simplicity and scalability. And their Community platform has become a global resource for education on development and DevOps topics, further illustrating that they, too, are stewards of open source.