Copyright (c) (copr) all rights reserved by TJH Internet SP and Earth Operations Central. All comments are strictly my unsupported opinion unless based upon promotional blurb extracted from the websites linked herein. This is by no means an exhaustive nor definitive list, and no particular recommendation nor assurance of solvency or utility is to be inferred from a listing herein.

Without an operating system, a computer is essentially a great doorstop. A computer can do many things, but until something tells it how to do it, it won't do a thing. The Operating System (OS) controls some of the most basic functions of a computer, controlling how it allocates memory, how it interfaces with various system components such as the harddrives, modems, printers, video displays, etc. Without the operating system as an interface between the machine and the software, nothing happens.

Computer Operating Systems

Apple Computers. Apple produces several operating systems, which are pretty machine-specific. They produce the:
MacOS Operating System for the Macintosh, a Motorola 68000 processor-based computer.
NewtonOS Operating System for the Apple Newton Personal Digital Assistant.

Digital Equipment Corporation (DEC) makes the VMS Operating System for their own VAX architecture.
International Business Machines (IBM) produces the OS/2 family of software for their own product line, and most Intel-architecture PCs will run it also.
Linux. This is a very stable and powerful UNIX-like Operating System which will run on Intel-architecture PCs, the Apple Macintosh PowerPC, Sun SPARC machines, DEC ALpha machines, etc. It's the most diverse operating system in the world, comes with all source code, and it's free.
It's what I prefer.
Microsoft makes operating systems for the IBM-Compatible PC, generally based on the Intel x86 processor architecture.

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