Meta Box AIO Extension GPL Overview:

Meta Box AIO It is a powerful, professional and lightweight developer toolkit to create unlimited boxes and custom fields for WordPress.

At the moment, each extension of the plugin Meta Box is provided separately. They act like a small module that provides only one function for one purpose. While this approach is good for continuous development, users might not want that. Some users who purchased the Developer Bundle have suggested an AIO package that includes all the extensions in a plugin. This way, they only need to install 1 plugin instead of 15, keeping the Plugins page clean and still having all the functionality.