Alias Manager
Apple Event Manager
Collection Manager
Debugger Services
Disk Initialization Manager
Event Manager
Exception Manager
File Manager
Gestalt Manager
Low Memory Accessors
Mathematical and Logical Utilities
Memory Management Utilities
Memory Manager
Multiprocessing Services
Notification Manager
Patch Manager
Power Manager
PPC Toolbox
Process Manager
Resource Manager
Shutdown Manager
Start Manager
Thread Manager
Time Manager
Vertical Retrace Manager