Print Manager

Desktop Manager

Folder Manager

Gestalt

SysEnvirons

SCSI Manager

Sound Manager

Scrap Manager

Serial Driver

Device Manager

Input/Output

File System

Resource Manager

Event Manager

Memory Manager

String Utility

Graf Utility

INI Utility

File Utility

System Utility

Dialog Utility

Resource Utility

Memory Utility

Error Utility

Application 4

Application 3

Application 2

Application 1