| Reader |
| Collection | A collection of backup objects of a certain application-specific type. |
| Exception | Base exception class for Horde\Backup. |
| Reader | The backup reader class that reads backups from the backup directory. |
| Translation | Translation wrapper class for Horde\Backup. |
| User | An application's backup for a single user. |
| Users | An application's list of users with backup data. |
| Writer | The backup writer class that writes backups to the backup directory. |