The GitHub Importer is a tool that allows users to seamlessly transfer their source code from platforms like Subversion, Mercurial, Team Foundation Server, or other Git repositories to GitHub with ease. Once the import process is complete, users receive a notification either via email or directly in their browser, indicating that their GitHub repository is ready for use. This feature can be accessed directly through a specified URL or during the creation of a new repository on GitHub.com. Over 400,000 repositories have already utilized this feature to transition to GitHub. For more detailed guidance on migrating source code, users can refer to the “Importing your project to GitHub” section in GitHub Help.