| core |
| Actions_Listener | Class Actions_Listener |
| Admin_Functions | Class Admin_Functions |
| Enqueue | Class Enqueue |
| Extensions_Updater | This class handles all functions that changes data structures and moving files |
| Screen | Class Screen |
| Secure | Class Secure |
| Site_Health | Class Site_Health |
| Users_Columns | Class Users_Columns |