DOS-Family Systems

This group gathers the disk operating systems of the MS-DOS and CP/M lineage built for IBM PC compatible and 8-bit microcomputers, including MS-DOS and its OEM variants such as IBM PC DOS, DR-DOS, FreeDOS, PTS-DOS, Z-DOS and NewDos/80, Digital Research CP/M and its descendants CP/M-86, CP/M Plus, MP/M and TurboDOS, the multi-user and multitasking DOS variants Multiuser DOS, DOS Plus, PC-MOS/386 and MS-DOS 4.0, the original 86-DOS it was purchased from, IBM OS/2 as the designated DOS successor for the PC platform, and Microsoft Windows, which ran on top of MS-DOS through its 3.x and 9x product lines. Their shared identity is the disk operating system tradition for x86 personal computers, as distinct from a platform-specific home computer disk operating system such as AmigaDOS, which belongs to Home Computer Operating Systems.