Operating System Names 2010-10-19 First Come First Served These are the Official System Names as they appear in the Domain Name System HINFO records and the NIC Host Table. Their use is described in . More have been added since the publication of . A system name may be up to 40 characters taken from the set of uppercase letters, digits, and the three punctuation characters hyphen, period, and slash. It must start with a letter, and end with a letter or digit. AEGIS AMIGA-OS-1.2 AMIGA-OS-1.3 AMIGA-OS-2.0 AMIGA-OS-2.1 AMIGA-OS-3.0 AMIGA-OS-3.1 AMIGA-OS-3.5 AMIGA-OS-3.9 APOLLO AIX/370 AIX-PS/2 BEOS-4.5.2 BEOS-5.0 BS-2000 CEDAR CGW CHORUS CHRYSALIS CMOS CMS COS CPIX CTOS CTSS CYGWIN DCN DDNOS DOMAIN DOS ECOS ECOSPRO EDX ELF EMBOS EMMOS EPOS FOONEX FREEBSD FORTH FUZZ GCOS GPOS HDOS IMAGEN INSTANT-INTERNET INTERCOM IMPRESS INTERLISP IOS IRIX ISI-68020 ITS KOSOS LINUX LINUX-1.0 LINUX-1.2 LINUX-2.0 LINUX-2.2 LINUX-2.4 LINUX-2.6 LISP LISPM LOCUS MACOS MINOS MOS MPE5 MPE/V MPE/IX MSDOS MULTICS MUSIC MUSIC/SP MVS MVS/SP NETBSD-1.0 NETBSD-1.1 NETBSD-1.2 NETBSD-1.3 NETWARE-3 NETWARE-3.11 NETWARE-4.0 NETWARE-4.1 NETWARE-5.0 NEXUS NMS NONSTOP NOS-2 NTOS OPENBSD OPENVME OPENVMS OS/DDP OS/2 OS4 OS86 OSX PCDOS PERQ/OS PLI PSDOS/MIT PSOS PRIMOS RISC-OS RISC-OS-3.10 RISC-OS-3.50 RISC-OS-3.60 RISC-OS-3.70 RISC-OS-4.00 RMX/RDOS ROS RSX11M RTE-A SATOPS SINIX SCO-OPEN-DESKTOP-1.0 SCO-OPEN-DESKTOP-1.1 SCO-OPEN-DESKTOP-2.0 SCO-OPEN-DESKTOP-3.0 SCO-OPEN-DESKTOP-LITE-3.0 SCO-OPEN-SERVER-3.0 SCO-UNIX-3.2.0 SCO-UNIX-3.2V2.0 SCO-UNIX-3.2V2.1 SCO-UNIX-3.2V4.0 SCO-UNIX-3.2V4.1 SCO-UNIX-3.2V4.2 SCO-XENIX-386-2.3.2 SCO-XENIX-386-2.3.3 SCO-XENIX-386-2.3.4 SCS SIMP SUN SUN-OS-3.5 SUN-OS-4.0 SWIFT TAC TANDEM TENEX THE-MAJOR-BBS TOPS10 TOPS20 TOS TP3010 TRSDOS ULTRIX UNIX UNIX-BSD UNIX-V1AT UNIX-V UNIX-V.1 UNIX-V.2 UNIX-V.3 UNIX-PC UNKNOWN UT2D V VM VM/370 VM/CMS VM/SP VMS VMS/EUNICE VRTX WAITS WANG WIN32 WINDOWS-95 WINDOWS-95-OSR1 WINDOWS-95-OSR2 WINDOWS-98 WINDOWS-CE WINDOWS-NT WINDOWS-NT-2 WINDOWS-NT-3 WINDOWS-NT-3.5 WINDOWS-NT-3.51 WINDOWS-NT-4 WINDOWS-NT-5 WINDOWS-NT-5.1 WINDOWS-NT-6 WINDOWS-NT-6.1 WORLDGROUP WYSE-WYXWARE X11R3 XDE XENIX