GitHub is a web-based platform built on Git that provides version control, code hosting, and collaborative software development features. It enables developers to work together on projects through pull requests, code reviews, issue tracking, and continuous integration workflows. GitHub supports both public open-source repositories and private projects, making it a central hub for millions of developers and organizations worldwide. Its ecosystem includes GitHub Actions for automation, GitHub Pages for documentation hosting, and integrations with a wide range of development tools. It is particularly relevant in Software Engineering and Citizen Science.

GitHub supports open source, distributed and co-creation collaboration and is suited for pair work, small teams, organizational settings and community-scale initiatives in remote settings.

GitHub is classified as a well-documented tool, indicating broad adoption and available documentation. It is a proprietary platform, available on Web, macOS, Windows, iOS.