Doctor DOS Betamax Power-Users' Corner
Commentary, tutorials, and references for MS-DOS and related utilities.
Dos/Windows commands since v1.00
An index of all built-in commands available in all versions of MS-DOS. Includes description and syntax of commands.
Georgos the DOS compatible operating system
A free DOS-compatible operating system. Site includes sample applications, discussion forum, and development information.
IBM Corp.
Makes PC DOS 2000; was one of the two original DOSes for the IBM PC. Now year 2000 compliant, and updated for a new century. Preserve your investment in DOS applications.
Idiots Operating System
A floppy-disk based operating systems distribution with a focus on multimedia applications.
Paul Edwards's Programming Page
Contains PDOS, a public domain DOS alternative.
PC DOS for Embedded Devices
Retooling of IBM PC DOS for use in embedded systems.
PhysTechSoft Ltd.
Makes PTS-DOS 2000: network support, file manager, archiver, internal boot virus protection, graphical web browser; email, telnet, FTP clients; many utilities, some for embedded system development.
RealDOS
A barebones DOS alternative.
RMF-DOS
Reduced Memory Footprint; goals: match functions of MS-DOS 6.22, IBM PC DOS 7.00, DR-DOS 7 subset. Written mainly in 2 free C compilers and assembler, most parts are smaller uncompressed than compressed parts of MS, IBM, DR. [Open Source, BSD]
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