DOS

On this website are DOS Batch File Instructionals and Examples. There is a discussion of DOS Command Switches and one on Variables. Two sections review DOS File Extensions. There are general DOS Tips followed by an examination of Fallacies commonly held regarding DOS. A section then devotes itself to Humour and Observations of DOS & its competitors. Finally, is a page linking to hundreds of DOS Websites world wide.

the inofficial PTS DOS FAQs (German, English), some downloads and the most important links.

ZDOS is a 32-bit real time OS for the X86 CPU family, written entirely in assembly language for maximum performance.

PhysTechSoft, Ltd. is one of the leading Russian software developer of the information security solutions, offers a wide range of software encryption products protecting communications and case sensitive data.

A barebones DOS alternative.

The core of DOS compatible operating system that is currently under development.

RMF-DOS is a project to create a compact, 8086-compatible, free clone of MS-DOS.

Retooling of IBM PC DOS for use in embedded systems.

Georgos is a MS-DOS (R) compatible operating system