Looking for your personal lists of Github repositories, which might be deleted from Github at some point, for whatever reason. For example, the maintainer might delete his account from Github or archive all his repositories.
A famous example of an open source project, which had trouble to continue thriving, is youtube-dl.
Which projects’ repositories do you think are worth backing up?
All repositories related to emulation and Nintendo, some of which I backed up on a self-hosted Forgejo instance.
Also, everything that you use and doesn’t have more than 2 or 3 maintainers.