DOS 3 or DOS-3 may refer to: Kosmos 557 aka Salyut-3 or DOS-3, a Russian space station Apple DOS for the Apple II, released in versions 3.1, 3.2, and 3.3 Atari DOS 3 for Atari 8-bit computers
It may also refer to versions of the Microsoft MS-DOS family: MS-DOS 3.0, with FAT16 support in 1984 MS-DOS 3.1 in 1985 MS-DOS 3.2 in 1985 MS-DOS 3.21 in 1987 MS-DOS 3.21R, a ROMed version of MS-DOS in 1989 for laptops MS-DOS 3.22, a ROMed OEM version of MS-DOS for HP 95LX in 1991 MS-DOS 3.3 in 1987 MS-DOS 3.3A Arabic MS-DOS 3.3, a special Arabic version of MS-DOS 3.3 (ADOS) in 1988 Hebrew MS-DOS 3.3, a special Hebrew version of MS-DOS 3.3 (HDOS) MS-DOS 3.3R, a ROMed version of MS-DOS in 1990 for TI laptops MS-DOS 3.31, an OEM version of MS-DOS with FAT16B support by Compaq MS-DOS 3.30+, an OEM version of MS-DOS with FAT16B support by Zenith-Data System MS-DOS 3.40, announced OEM version and successor of MS-DOS 3.3 with FAT16B support in 1988
It may also refer to versions of the IBM PC DOS family: PC DOS 3.0, successor of PC DOS 2.11 with FAT16 support in 1984 PC DOS 3.1, successor of PC DOS 3.0 in 1984/1985 PC DOS 3.2, successor of PC DOS 3.1 in 1986 PC DOS 3.21, successor of PC DOS 3.2 in 1986 IBM DOS 3.3, successor of PC DOS 3.21 in 1987 IBM DOS 3.4, announced successor of IBM DOS 3.3 in 1988
It may also refer to versions of the Digital Research DR DOS family: DR DOS 3.31, based on DOS Plus 2.1 and Concurrent PC DOS 6.0 with FAT16B support in 1988 DR DOS 3.32, successor of DR DOS 3.31 in 1988, reporting itself as "PC DOS 3.31" DR DOS 3.33, successor of DR DOS 3.32 in 1988, reporting itself as "PC DOS 3.31" DR DOS 3.34, successor of DR DOS 3.33 in 1988, reporting itself as "PC DOS 3.31" DR DOS 3.35, successor of DR DOS 3.34 in 1988, reporting itself as "PC DOS 3.31" DR DOS 3.40, successor of DR DOS 3.35, reporting itself as "PC DOS 3.31" DR DOS 3.41, successor of DR DOS 3.40 in 1989, reporting itself as "PC DOS 3.31" DR DOS 5.0, successor of DR DOS 3.41 in 1990, reporting itself as "PC DOS 3.31" DR DOS 6.0, successor of DR DOS 5.0 in 1991, reporting itself as "PC DOS 3.31" NetWare PalmDOS 1.0, a successor to DR DOS 6.0 tailored for early palmtop PCs in 1992, reporting itself as "PC DOS 3.31"
See also Microsoft Windows NTDOS 30.00 DOS (disambiguation) DOS 2 (disambiguation) DOS 4 (disambiguation) DOS/360 DOS 386 (disambiguation)