Lesson 13 List Of Operating Systems

MODULE IN ITE229 - OPERATING SYSTEMS 26
Prepared by: For-Ian V. Sandoval

LESSON 13
LIST OF OPERATING SYSTEMS

Operating systems can be categorized by technology, ownership,
licensing, working state, usage, and by many other characteristics. In
practice, many of these groupings may overlap.

The following tables show the different kinds of operating system
that runs on different kind of machines.

Table 1. Operating systems categorized by proprietary or ownership.
PROPRIETARY OPERATING SYSTEM
Acorn • Arthur
• ARX
• MOS (on the BBC Micro and BBC
Master)
• RISC OS

• RISC iX (based on 4.3BSD)
Amiga • AmigaOS
• AmigaOS 1.0-3.9
• AmigaOS 4
• AmigaOS 4.0
• AmigaOS 4.1
• AmigaOS 5
• Amiga Anywhere 2

• Amiga Unix (aka Amix)
Apollo • AEGIS/Domain/OS One of the first
network-based systems. Ran on
Apollo/Domain hardware. Later
bought by Hewlett-Packard

Apple • Apple DOS
• ProDOS
• GS/OS
• SOS (Sophisticated Operating
System)
• Lisa OS
• Mac OS System Software 1


• Mac OS System 7
• Mac OS 8
• Mac OS 9
• A/UX
• MkLinux
• Mac OS X 10. 0 “Cheetah”
• Mac OS X 10. 1 “Puma”
• Mac OS X 10. 2 “Jaguar”
• Mac OS X 10. 3 “Panther”
• Mac OS X 10. 4 “Tiger”
• Mac OS X 10. 5 “Leopard”
• Mac OS X 10. 6 “Snow Leopard”
• Mac OS X Server
• Darwin
• iPhone OS

• Apple Newton OS
Atari • Atari DOS
• Atari TOS
• Atari MultiTOS

BAE System • BeOS
• BeIA
• ZETA
Burroughs (later Unisys) • BTOS

• MCP (Burroughs Large Systems)
Convergent Technologies • CTOS
(later acquired by Unisys)

Digital/Tandem • OS/8
Computers/Compaq/HP • ITS (for the PDP-6 and PDP-10)
• Multi-Programming Executive (from
HP)
• TOPS-10 (for the PDP-10)
• WAITS (for the PDP-6 and PDP-10)
• TENEX (from BBN, for the PDP-10)


• TOPS-20 (for the PDP-10)
• RSTS/E (multi-user time-sharing OS for
PDP-11s)
• RSX-11 (multiuser, multitasking OS for
PDP-11s)
• RT-11 (single user OS for PDP-11)
• VMS (originally by DEC, now by HP)
for the VAX mini-computer range,
Alpha and Intel Itanium 2; later
renamed OpenVMS)
• Domain/OS (originally Aegis, from
Apollo Computer who were bought
by HP)
• RTE HP's Real Time Executive (ran on
the HP 1000)
• TSB HP's Time Share Basic (yes, it was
an operating system, ran on the HP
2000 series)
• Digital UNIX (derived from OSF/1,
became HP's Tru64 UNIX)
• HP-UX
• Ultrix
• NonStop Kernel - Guardian

• NonStop Kernel - OSS (POSIX-
compliant Open System Services)
Fujitsu • Towns OS
Green Hills Software • INTEGRITY Reliable Operating system
• NTEGRITY-178B A DO-178B certified
version of INTEGRITY.

• µ-velOSity A lightweight microkernel
Hewlett-Packard • RTE Real-time Environment; ran on
HP1000 series computers
• MPE Multi-programming Executive;
ran on HP3000 mini-computers

• HP-UX HP-UX; runs on HP9000 and
Itanium servers - from small to
mainframe-class computers
Intel • iRMX real-time operating system
originally created to support the Intel
8080 and 8086 processor families in


embedded applications
IBM • IBM 7090/94 IBSYS
• SYSTEM 1400/1800 IJMON A Bootable
serial I/O monitor for loading
programs.
• BOS/360 Early interim version of DOS/
360, briefly available at a few Alpha
& Beta System 360 sites.
• TOS/360 Similar to BOS above and
more fleeting, able to boot and run
from 2x00 series tape drives.
• DOS/360 Disk Operating System. First
commonly available OS for
System/360 due to problems in the
OS/360 Project. Multi-programming
system with up to 3 partitions
• DOS/360/RJE DOS/360 with a control
program extension that provided for
the monitoring of Remote Job Entry
hardware (Card Reader & Printer)
connected by dedicated phone
lines
• DOS/VSE First DOS offered on
System/370 systems, provided Virtual
Storage Extensions, and SNA. Still had
fixed size processing partitions, but
up to 14 partitions
• DOS/VSE/ESA DOS/VSE extended
virtual memory support to 32 bit
addresses (Extended System
Architecture)
• z/VSE Latest version of the four
decades old DOS lineage. Now
supports 64 bit addresses,
Multiprocessing, Multiprogramming,
SNA, TCP/IP, and some virtual
machine features in support of Linux
workloads. OS/360 First official OS
targeted for the System/360
architecture
• RTOS Real Time Operating System,
run on 5 NASA custom
System/360/75s. A mash up by the


Federal Systems Division of the MFT
system management, PCP basic
kernel and file system, with MVT task
management and FSD custom real
time kernel extensions and error
management. The pinnacle of
OS/360 development
• OS/370 The official port of OS/360
targeted for the System/370 virtual
memory architecture
• OS/VS1 Virtual-memory version of
OS/MFT
• OS/VS2 Virtual-memory version of
OS/MVT
• MUSIC/SP Mainframe operating
system for IBM hardware, developed
by McGill University
• OS/390 Upgrade to MVS, with an
additional Unix-like environment
• z/OS z/Architecture version of OS/390
• TPF z/OS extension
• CP/CMS Control Program /
Cambridge Monitor System, Virtual
Machine operating System for
System/360 Model 44 and 67
• VM/CMS Virtual Machine /
Conversational Monitor System, VM
(operating system) for System/370
with Virtual Memory
• VM/XA VM (operating system)
eXtended Architecture for
System/370 with extended Virtual
Memory
• VM/ESA Virtual Machine /Extended
System Architecture, added 32 bit
addressing to VM series
• z/VM z/Architecture version of the
VM OS (64 bit addressing)
• IBM System/34, 36 System Support
Program, or SSP
• OS/400 descendant of System/38
CPF
• i5/OS extends OS/400 with significant


interoperability features
• AIX (a System V Unix version)
• AOS (a BSD Unix version)
• PC-DOS IBM supported,
documented, and licensed copies
of Microsoft MS-DOS
• OS/2 Warp
• eComStation (Warp 4.5/Workspace
on Demand, rebundled by Serenity
Systems International)
• IBM 8100 DPCX
• IBM 8100 DPPX
• K42 PowerPC or Intel x86 based
cache-coherent multiprocessor
systems (IBM Website)
• IBM EDX Event Driven Executive for
the IBM/Series 1 minicomputers

• IBM RPS Realtime Programming
System for the IBM/Series 1
minicomputers
ICL (formerly ICT) • GEORGE 2/3/4 GEneral
ORGanisational Environment, used
by ICL 1900 series mainframes

• VME by International Computers
Limited (ICL), particularly appearing
on the ICL 2900 Series
LynuxWorks • LynxOS
(originally Lynx Real-time
Systems)

Micrium • MicroC/OS-II (Small pre-emptive
priority based multi-tasking kernel)
Microsoft • Xenix
• MSX-DOS
• MS-DOS
• Windows CE 3.0
• Windows Mobile
• Windows CE 5.0
• Windows 1.0,
• Windows 2.0,


• Windows 3.0
• Windows 3.1x
• Windows 3.2
• Windows 95 (aka Windows 4.0)
(codename: Chicago)
• Windows 98 (aka Windows 4.1)
(codename: Memphis)
• Windows Millennium Edition (often
shortened to Windows Me) (aka
Windows 4.9)
• OS/2
• Windows NT 3.1
• Windows NT 3.5
• Windows NT 3.51
• Windows NT 4.0
• Windows 2000 (aka Windows NT 5.0)
• Windows XP (aka Windows NT 5.1)
(codename: Whistler)
• Windows Server 2003 (aka Windows
NT 5.2) (codename: Whistler Server)
• Windows Fundamentals for Legacy
PCs (aka Windows NT 5.1)
• Windows Vista (aka Windows NT 6.0)
(codename: Longhorn)
• Windows Home Server
• Windows Server 2008 (aka Windows
NT 6.0) (codename: Longhorn
Server)
• Windows 7 (previously codenamed
Blackcomb, then Vienna)
• Windows Preinstallation Environment
(WinPE)
• Singularity

• Midori
Novell • Netware

• Suse Linux
RCA • TSOS
SCO/The SCO Group • Xenix
• Xenix 286
• Xenix 386
• SCO Unix


• SCO Open Desktop
• SCO OpenServer 5
• UnixWare 2x,
• UnixWare 7
• SCO OpenServer 6
Unicoi System • Fusion RTOS
• DSPOS
Wind River Systems • VxWorks
Non Standard Languages • Pilot Operating System
• PERQ Operating System (POS)
Lisp-based Operating System • Lisp Machine Operating System
Other • EOS (Operating System), developed
by ETA Systems for use in their ETA-10
line of supercomputers
• EMBOS, developed by Elxsi for use on
their mini-supercomputers
• GCOS is a proprietary Operating
System originally developed by
General Electric
• PC-MOS/386 - DOS-like, but
multiuser/multitasking
• SINTRAN III - an operating system
used with Norsk Data computers.
• THEOS
• TinyOS
• TRS-DOS a floppy-disk-oriented OS
supplied by Tandy/Radio Shack for
their Z80-based line of personal
computers.
• TX990/TXDS, DX10 and DNOS -
proprietary operating systems for
TI-990 minicomputers
• MAI Basic Four - An OS implementing
Business Basic from MAI Systems.
• Michigan Terminal System -
Developed by a group of American
universities for IBM 360 series
mainframes
• MUSIC/SP (an operating system
developed for the S/370, running
normally under VM)
• TSX-32, a 32-bit operating system for


x86 platform.
• OS ES An operating system for ES
EVM

• Prolog-Dispatcher - used to control
Soviet Buran space ship
Other proprietary Unix-like and • Aegis (Apollo Computer)
POSIX-compliant • Amiga Unix (Amiga ports of Unix
System V release 3.2 with Amiga
A2500UX and SVR4 with Amiga
A3000UX. Started in 1989, last version
was in 1992)
• Clix (Intergraph's System V
implementation)
• Coherent (Unix-like OS from Mark
Williams Co. for PC class computers)
• DC/OSx (DataCenter/OSx was an
operating system for MIPS based
systems developed by Pyramid
Technology)
• DG/UX (Data General Corp)
• DNIX from DIAB
• DSPnano RTOS (POSIX nanokernel,
DSP Optimized, Open Source)
• Idris workalike from Whitesmiths
• INTERACTIVE UNIX (a port of the UNIX
System V operating system for Intel
x86 by INTERACTIVE Systems
Corporation)
• IRIX from SGI
• MeikOS
• NeXTSTEP (developed by NeXT; a
Unix-based OS based on the Mach
microkernel)
• OS-9 Unix-like RTOS. (OS from
Microware for Motorola 6809 based
microcomputers)
• OS9/68K Unix-like RTOS. (OS from
Microware for Motorola 680x0 based
microcomputers; based on OS-9)
• OS-9000 Unix-like RTOS. (OS from
Microware for Intel x86 based
microcomputers; based on OS-9,


written in C)
• OSF/1 (developed into a
commercial offering by Digital
Equipment Corporation)
• OPENSTEP
• QNX (POSIX, microkernel OS; usually
a real time embedded OS)
• Pardus (Turkish Linux)
• Rhapsody (an early form of Mac OS
X)
• RISC/os (a port by MIPS of 4.3BSD to
the RISC MIPS architecture)
• RMX
• SCO UNIX (from SCO, bought by
Caldera who renamed themselves
SCO Group)
• SINIX (a port by SNI of Unix to the
RISC MIPS architecture)
• Solaris (Sun's System V-based
replacement for SunOS)
• SunOS (BSD-based Unix system used
on early Sun hardware)
• SUPER-UX (a port of System V Release
4.2MP with features adopted from
BSD and Linux for NEC SX
architecture supercomputers)
• System V (a release of AT&T Unix,
'SVR4' was the 4th minor release)
• System V/AT, 386 (The first version of
AT&T System V UNIX on the IBM 286
and 386 PCs, ported and sold by
Microport)
• Trusted Solaris (Solaris with kernel and
other enhancements to support
multilevel security)
• UniFlex (Unix-like OS from TSC for
DMA-capable, extended addresses,
Motorola 6809 based computers;
e.g. SWTPC, GIMIX, …)
• Unicos (the version of Unix designed
for Cray Supercomputers, mainly
geared to vector calculations)


• Unison RTOS (Multicore RTOS with DSP
Optimization
SDS (Scientific Data Systems) • CP Control Program
SDS later acquired by Xerox,
then Honeywell.
TRON Project • TRON (an open real-time operating
system kernel)
UNIVAC (later Unisys) • EXEC I
• EXEC II
• EXEC 8 Ran on 1100 series.

• VS/9, successor to RCA TSOS
WAVECOM • Open AT OS

Table 2. Operating systems categorized by non-proprietary Unix-like.
NON-PROPRIETARY OPERATING SYSTEM
Unix-Like • TUNIS
Research Unix-like and other • Minix (study OS developed by
POSIX-compliant Andrew S. Tanenbaum in the
Netherlands)
• Plan 9 (distributed OS developed at
Bell Labs, based on original Unix
design principles yet functionally
different and going much further)
• Inferno (distributed OS derived from
Plan 9, originally from Bell Labs)
• Plan B (distributed OS derived from
Plan 9 and Off++ microkernel)
• Solaris, contains original Unix (SVR4)
code (code now open source via
OpenSolaris project)
• Unix (OS developed at Bell Labs ca
1970 initially by Ken Thompson)

• Xinu, (Study OS developed by
Douglas E. Comer in the USA)
Free Unix-like • BSD (Berkeley Software Distribution, a
(aka open source) variant of Unix for DEC VAX
hardware)
• GNU


• Linux
• OpenDarwin
• OpenSolaris, contains original Unix
(SVR4) code
• SSS-PC Developed at Tokyo University
• Syllable

• VSTa

Table 3. Operating systems categorized by non-proprietary non-Unix-like.
NON-PROPRIETARY OPERATING SYSTEM
Research non-Unix-like • Amoeba (research OS by Andrew S.
Tanenbaum)
• Croquet
• House Haskell User's Operating
System and Environment, research
OS written in Haskell and C.
• ILIOS Research OS designed for
routing
• EROS microkernel, capability-base
• L4 Second generation microkernel
• Mach (from OS kernel research at
Carnegie Mellon University)
• MONADS capability-based OS
designed to support the MONADS
hardware projects
• Nemesis Cambridge University
research OS - detailed quality of
service abilities.
• Singularity - A research operating
system written mostly in managed
code (C#) by Microsoft.
• Spring (research OS from Sun
Microsystems)

• V from Stanford, early 1980s
Open Source non-Unix-like • FullPliant (programming language
based)
• FreeDOS (open source DOS variant)
• FreeVMS (open source VMS variant)
• Haiku (open source inspired by
BeOS, under development)


• ReactOS (free software Windows NT
compatible OS, in early
development since 2001)

• osFree (open source OS/2
implementation)

Table 4. Operating systems categorized as Disk Operating System
OPERATING SYSTEM
Disk Operating System (DOS) • 86-DOS (developed at Seattle
Computer Products by Tim Paterson
for the new Intel 808x CPUs; licensed
to Microsoft, became PC DOS/MS-
DOS. Also known by its working title
QDOS.)
• PC DOS (IBM's DOS variant,
developed jointly with Microsoft,
versions 1.0 – 7, 2000).
• MS-DOS (Microsoft's DOS variant for
OEM, developed jointly with IBM,
versions 1.x – 6. Microsoft's now
abandoned DOS variant)
• DR-DOS (Digital Research's [later
Novell, Caldera, ...] DOS variant). a.)
Concurrent DOS (Digital Research's
first multiuser DOS variant). b.)
Multiuser DOS (Digital Research's
[later CCI's. Real's/...] multiuser DOS
variant)
• FreeDOS (open source DOS variant)
• ProDOS (operating system for the
Apple II series computers)
• PTS-DOS (DOS variant by Russian
company Phystechsoft)
• RDOS (Data General Corp)
• TurboDOS (Software 2000, Inc.)

• Multi-tasking user interfaces and
environments for DOS. a.)
DESQview+ QEMM 386 multi-tasking
user interface for DOS and b.)
DESQView/X (X-windowing GUI for


DOS)

Table 5. Operating systems categorized as Network Operating System
OPERATING SYSTEM
Network Operating System • Cambridge Ring
• CSIRONET by (CSIRO)
• CTOS (Convergent Technologies,
later acquired by Unisys)
• Data ONTAP by NetApp
• SAN-OS by Cisco
• EOS by McDATA
• Fabric OS by Brocade
• JUNOS (Juniper Networks)
• NetWare (networking OS by Novell)
• NOS (developed by CDC for use in
their Cyber line of supercomputers)
• Novell Open Enterprise Server (Open
Source networking OS by Novell.
Can incorporate either SUSE Linux or
Novell NetWare as its kernel).
• OliOS
• Plan 9 (distributed OS developed at
Bell Labs, based on Unix design
principles but not functionally
identical)
• Inferno (distributed OS derived from
Plan 9, originally from Bell Labs)
• Plan B (distributed OS derived from
Plan 9 and Off++ microkernel)
• TurboDOS (Software 2000, Inc.)

Table 6. Operating systems categorized as Web Operating System
OPERATING SYSTEM


Web Operating System • amoebaOS
• DesktopTwo
• G.ho.st
• YouOS
• Browser OS
• eyeOS
• Jooce

Table 7. Operating systems categorized as generic/commodity, non-Unix
and other.
OPERATING SYSTEM
Generic/Commodity, non-Unix • BLIS/COBOL
and other • Bluebottle also known as AOS (a
concurrent and active object
update to the Oberon operating
system)
• BS1000 by Siemens AG
• BS2000 by Siemens AG, now BS2000/
OSD from Fujitsu-Siemens Computers
(formerly Siemens Nixdorf
Informationssysteme)
• BS3000 by Siemens AG (functionally
similar to OS-IV and MSP from Fujitsu)
• Control Program/Monitor (CP/M)
• FLEX9 (by TSC for Motorola 6809
based machines; successor to FLEX,
which was for Motorola 6800 CPUs)
• FutureOS (for Amstrad/Schneider
CPC6128 and CPCPlus machines)
• GEM (windowing GUI for CP/M, DOS,
and Atari TOS)
• GEOS (popular windowing GUI for
PC, Commodore, Apple computers)
• JavaOS
• JNode JNode.org's OS written 99% in
Java (native compiled), provides
own JVM and JIT compiler. Based on
GNU Classpath
• JX Java operating system that
focuses on a flexible and robust


operating system architecture
developed as an open source
system by the University of Erlangen.
• KERNAL (default OS on Commodore
64)
• MERLIN for the Corvus Concept
• MorphOS (Amiga compatible)
• MSP by Fujitsu (successor to OS-IV),
now MSP/EX[4], also known as
Extended System Architecture (EXA),
for 31-bit mode
• nSystem by Luis Mateu at DCC,
Universidad de Chile
• NetWare (networking OS by Novell)
• Oberon operating system
(developed at ETH-Zürich by Niklaus
Wirth et al) for the Ceres and
Chameleon workstation projects. see
also Oberon programming language
• OSD/XC by Fujitsu-Siemens (BS2000
ported to an emulation on a Sun
SPARC platform)
• OS-IV by Fujitsu (based on early
versions of IBM's MVS)
• Pick (often licensed and renamed)
• PRIMOS by Prime Computer
(sometimes spelled PR1MOS and
PR1ME)
• Sinclair QDOS (multitasking for the
Sinclair QL computer)
• SkyOS (Commercial desktop OS for
PCs)
• SSB-DOS (by TSC for Smoke Signal
Broadcasting; a variant of FLEX in
most respects)
• SymbOS (GUI based multitasking
operating system for Z80 computers)
• Symobi (GUI based modern micro-
kernel OS for x86, ARM and PowerPC
processors, used and developed
further at Technical University of
Munich)
• TripOS, 1978


• UCSD p-System (portable complete
programming
environment/operating
system/virtual machine developed
by a long running student project at
the Univ Calif/San Diego; directed by
Prof Ken Bowles; written in Pascal)
• UMIX, made for the ICFP
Programming Contest 2006.
• VOS by Stratus Technologies with
strong influence from Multics
• VOS by Hitachi for its IBM-compatible
mainframes, based on IBM's MVS
• VM2000 by Siemens AG
• VisiOn (first GUI for early PC
machines; not commercially
successful)
• VPS/VM (IBM based, main operating
system at Boston University for over
10 years.)
• aceos under GPL
• Miraculix Russian OS, under unknown
license.

Table 8. Operating systems for Elektronica BK Soviet personal computer
OPERATING SYSTEM
Elektronica BK Soviet personal • ANDOS
computer • AO-DOS
• BASIS
• CSI-DOS
• DOSB10
• DX-DOS
• FA-DOS
• HC-DOS
• KMON (operating system)|KMON
• MicroDOS
• MK-DOS
• NORD
• NORTON-BK
• RAMON


• PascalDOS
• RT-11
o ROM embedded
o RT-11SJ
o OS BK-11 (RT-11 version)
• Turbo-DOS
• BKUNIX

• OS/A WASP

Table 9. Operating systems categorized as Hobby
OPERATING SYSTEM
Hobby Operating System • AROS (AROS Research Operating
System, formerly known as Amiga
Research Operating System)
• AtheOS branched to become
Syllable
• DexOS, (Game console-like
operating system for 32-bit x86
computers)
• EROS
• FAMOS Foremost Advanced Memory
Operating System
• HelenOS
• KolibriOS (fork of MenuetOS)
• LoseThos
• LSE/OS
• MenuetOS (extremely compact OS
with GUI, written entirely in FASM
assembly language)
• NewOS
• Syllable (a modern, independently
originated OS; see AtheOS)
• Visopsys

• TajOS

Table 10. Operating systems categorized as Embedded Operating System
OPERATING SYSTEM


Embedded Operating System • A/ROSE
• Embedded Linux
• FreeBSD
• FreeRTOS
• Inferno (distributed OS, Bell Labs)
• LynxOS
• MINIX 3
• .NET Micro Framework
• OS/RT
• Open AT OS
• polyBSD (embedded NetBSD)
• QNX
• RTXC Quadros RTOS by Quadros
Systems
• ROM-DOS
• T2 SDE
• VxWorks
• Windows XP Embedded

• Windows CE
Embedded Operating System • Inferno (distributed OS originally from
in Personal Digital Assistants Bell Labs)
(PDAs) • Palm OS from Palm Inc; now spun off
as PalmSource
• EPOC originally from Psion (UK), now
from Symbian, preferred name now
is Symbian OS
• Windows CE, from Microsoft
o Pocket PC from Microsoft, a
variant of Windows CE.
o Windows Mobile from Microsoft, a
variant of Windows CE.
• Linux on Sharp Zaurus and Ipaq
• DOS on Poqet PC
• Newton OS on Apple Newton
Messagepad
• VT-OS for the Vtech Helio
• Internet Tablet OS based on Debian
Linux and deployed on Nokia's Nokia
770, N800 and N810 Internet Tablets.
• Magic Cap


Embedded Operating System • ipodlinux
in Music Players • Pixo
• RockBox
• iPhone OS

• iriver clix UI
Embedded Operating System • BlackBerry OS
in Smartphones • Embedded Linux
o Android
o Openmoko Linux
o Mobilinux
o MontaVista
o MotoMagx
o Qtopia
o LiMo Platform
• iPhone OS
• JavaFX Mobile
• Palm OS
• Symbian OS
• Windows CE

o Windows Mobile
Embedded Operating System • AirOS by Ubiquiti networks
in Router • CatOS by Cisco Systems
• Cisco IOS (originally Internetwork
Operating System) by Cisco Systems
• CyROS by Cyclades
• DD-WRT by NewMedia-NET
• Inferno (distributed OS originally from
Bell Labs)
• IOS-XR by Cisco Systems
• JunOS by Juniper Networks
• RouterOS by Mikrotik
• ROX by Ruggedcom

• ScreenOS by Juniper Networks
originally from Netscreen
Embedded Operating System • BeRTOS
in Micro-Controller, Real-time • ChibiOS/RT GPL licensed RTOS
• ChorusOS
• Contiki written in C
• DSPnano RTOS (POSIX nanokernel,
DSP Optimizations, Open Source)


• eCos
• embOS (Segger)
• FreeRTOS
• Fusion RTOS
• INtime RTOS for Windows, an
evolutionary variant of iRMX for
Windows designed for 32-bit
Windows platforms
• iRMX (originally developed by Intel)
• Inferno (distributed OS originally from
Bell Labs)
• INTEGRITY
• LUnix written in 6502
• LynxOS
• MenuetOS
• MontaVista Linux (see also
Embedded Linux)
• Nucleus
• OS-9 by Microware
• Operating System Embedded: OSE
• OSEK
• OS/RT
• Phoenix-RTOS
• Prex
• QNX
• RTAI
• RTEMS (Real-Time Executive for
Multiprocessor Systems)
• RTLinux by Wind River Systems
• RTXC Quadros RTOS by Quadros
Systems
• SCIOPTA RTOS
• ThreadX
• TRON Project and ITRON Project
(related to BTRON, CTRON, MTRON,
etc.)
• μClinux
• uKOS
• µOS++ (micro OS plus plus)
• Unison Operating System / Unison
DSP Operating System (RTOS) /
Unison RTOS (Multicore DSP
Operating System)


• VRTX / Versatile Real-Time Executive
• VxWorks by Wind River Systems
• XMK (eXtreme Minimal Kernel)

• Xenomai

Table 11. Capability-based Operating systems
OPERATING SYSTEM
LEGO Mindstorms • BrickOS operating system
• leJOS operating system

• ChyanOS operating system
Other capability-based OS • KeyKOS nanokernel
• EROS microkernel
• CapROS EROS successor
• Coyotos EROS successor, goal: be
first formally verified OS
• MONADS designed to support the
MONADS hardware projects.
• SPEEDOS builds on MONADS ideas

• V from Stanford, early 1980s

Lesson 13 List Of Operating Systems

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Lesson 13 List Of Operating Systems