About archiving repositories→
When you archive a repository, you are letting people know that a project is no longer actively maintained.
Archiving repositories→
You can archive a repository to make it read-only for all users and indicate that it's no longer actively maintained. You can also unarchive repositories that have been archived.
About archiving content and data on GitHub→
You can archive content and data on GitHub for other people to view and reference.
Referencing and citing content→
You can use third-party tools to cite and reference content on GitHub.
Backing up a repository→
You can use the API or a third-party tool to back up your repository.