The categories of information that you can monitor depend on which networking services are installed on your system, but they always include File System, Kernel, and Memory Manager.
manager | manager (baseball) | general manager | memory | Read-only memory | Manager (association football) | Football Manager | Manager (football) | Player Manager | general manager (baseball) | General Manager | Manager (professional wrestling) | football manager | window manager | Elephant's Memory | Championship Manager | Random-access memory | Mike Bassett: England Manager | Memory Stick | Memory | Flash memory | memory management unit | Manager (baseball) | Manager | IBM Rational Quality Manager | General manager (American football) | Direct memory access | virtual memory | Talent manager | read-only memory |
To keep a reasonable amount of base memory free mandated the use of QEMM or a similar memory manager.
MS-DOS also grew by incorporating, by direct licensing or feature duplicating, the functionality of tools and utilities developed by independent companies, such as Norton Utilities, PC Tools (Microsoft Anti-Virus), QEMM expanded memory manager, Stacker disk compression, and others.