Amiga
Amiga OS
Apple
Mac OS OS X
Atari
TOS
Digital Research
CP/M CP/M-80 CP/M-86 CP/M-68k MP/M DR-DOS GEM GEMDOS
DEC
DOS/BATCH 11 Digital UNIX OpenVMS OS/8 RT-11 RSX-11 TOPS-10 TOPS-20 Ultrix VMS
Hewlett-Packard
HP-UX
IBM
AIX PC-DOS OS/2 z/OS OS-390 VMS
Microsoft
MS-DOS Microsoft Windows Microsoft Windows NT Xenix Windows CE Pocket PC
Sun
Solaris Sun OS
# Računarstvo, zatvoreni operacijski sustavi