Config Pages
Provides fieldable configuration entities that can be placed anywhere in the menu system, with context-awareness support for language, domain, or custom contexts.
Tags
fieldable
Site Settings and Labels
Provides a content entity system for managing site-wide settings and labels that clients can edit without affecting site configuration.
File Entity (fieldable files)
Extends Drupal file entities to be fieldable and viewable, allowing files to be organized into types with custom fields, display modes, and formatters.