Registry included below
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 [RFC952]. More have been added since the publication of [RFC952]. 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.
| Name |
|---|
| 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 |