MLH is the largest developer community in the world. Since 2013, we've empowered more than 5 million developers across nearly 100 countries to learn new technologies, build creative projects, and launch their careers — all through hands-on programs like hackathons, fellowships, workshops, and online challenges and content.
In February 2026, MLH acquired DEV — bringing together the place where developers build with the place where developers share. If DEV is the library, MLH is the lab.
Get Involved
Whether you want to attend your first hackathon, write about what you're building, or help organize an event in your community — there's a place for you.
Browse upcoming hackathons, digital events, and more on MLH's events calendar.
Organize a hackathon or hack day as an official MLH event. Learn more on our Event Membership page.
Share your hackathon stories, project walkthroughs, and tutorials right here on DEV using the #hackathon and #mlh tags.
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