Hackathons

Seattle Open-Source Web Tools Hackathon

Seattle Convention Center
Seattle Convention Center – Summit Building, 900 Pine Street 98101 98101 Seattle, Washington, United States

  10 Jul 2026 04:00 PM

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Contribute to global open-source projects, build browser extensions, or design accessible web developer tools at this collaborative 48-hour Seattle hackathon. More

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The Seattle Open-Source Web Tools Hackathon is a community-first programming marathon focused entirely on advancing the open-source software ecosystem. Unlike traditional competitive hackathons that focus on business pitches, this 48-hour sprint emphasizes clean documentation, code reusability, collaborative development, and building tools that make web development accessible globally. Participants work in teams or independently to contribute to major open-source web frameworks, build functional browser extensions that enhance developer workflows, or design helpful accessibility plugins for content management systems. Experienced open-source project maintainers line the room, teaching students and junior engineers how to structure professional pull requests, handle code reviews, and maintain public code repositories. The event is a phenomenal learning experience for developers looking to deepen their Git knowledge, collaborate with global engineers, and leave a permanent mark on the open web.

  1. Learn how to successfully contribute to major public open-source code repositories.
  2. Receive code reviews and architecture guidance from core project maintainers.
  3. Build functional tools that improve the daily workflows of web developers globally.
  4. Strengthen your GitHub profile with authenticated commits and pull requests.
  5. Experience a collaborative, non-competitive community programming culture.