I consider rclone one of my most used tools for managing data, and personally think it's reasonably well-structured: https://github.com/rclone/rclone https://gi

I consider rclone one of my most used tools for managing data, and personally think it's reasonably well-structured: https://github.com/rclone/rclone https://github.com/rclone/rclone I agree with the other commenters that stdlib is excellent for delving deep into the language.