रीयल-टाइम प्रचालन तंत्रों की तुलना

मुक्त ज्ञानकोश विकिपीडिया से

यहाँ सकाल प्रचालन तंत्रों (RTOS) की तुलना की गयी है। सकाल प्रचालन तंत्र (रीयल टाइम ऑपरेटिंग सिस्टम) उन प्रचालन तंत्रों को कहते हैं जो अलगा इनपुट आने के पहले ही वर्तमान इनपुट को प्रक्रमित कर देते हैं।

नाम लाइसेन्स स्रोत मॉडल लक्ष्य किए गए उपयोग स्टैटस प्लेटफॉर्म आधिकारिक  वेबसाइट
Abassi Proprietary closed embedded active AVR32, ATmega, ColdFire, Cortex-A53, Cortex-A9, Cortex-M0, Cortex-M3, Cortex-M4, MSP430, PIC32, TMS320C2000, 80251, 8051 www.code-time.com/products.html
AMOS Proprietary ? commercial closed 680x0, 683xx, x86 via emulation www.alphamicro.com
AMX RTOS Proprietary closed embedded active 680x0, 683xx, ARM, ColdFire, MIPS32, PowerPC www.kadak.com/rtos/rtos.htm
Apache Mynewt Apache 2.0 open embedded active ARM Cortex-M, MIPS32, Microchip PIC32, RISC-V mynewt.apache.org
Arm Mbed OS Apache 2.0 open source embedded active Cortex-M, Cortex-R, Cortex-A os.mbed.com
uKOS GNU GPL open source embedded active Cortex-M3-M4-M7-H7, 6833x, PIC, CSEM icyflex-1, STM32 www.ukos.ch
ARTOS (Locamation) Proprietary closed power-system automation active x86 www.locamation.com
ARTOS (Robotu) Proprietary ? embedded, robots defunct ARM9+ www.robotu.com/ARTOS/Welcome.html
Atomthreads BSD open source embedded active AVR, STM8, ARM, MIPS atomthreads.com
AVIX Proprietary closed embedded active Atmel AT91SAM3(U/S), EFM32, NXP LPC1300-1700, ST Micro STM32, Texas Instruments LM3S, Toshiba TMPM330, Microchip PIC32MX-PIC24F-PIC24H-dsPIC30F-dsPIC33F www.avix-rt.com
BeRTOS modified GNU GPL open source embedded archived ARM, Cortex-M3, ARM ARM7TDMI, Atmel AVR, PowerPC (emu), x86 (emu), x86-64 (emu) www.bertos.org
BOOS Core GNU GPL open source embedded active ARMv5TEJ (TI AM18x), DSP (TI TMS320C64x) www.baigudin.software/boos/
BRTOS MIT open source embedded active Freescale Kinetis (ARM Cortex-M4), Freescale Coldfire V1, Freescale HCS08, ST STM32F4xx (ARM Cortex-M4F), NXP LPC11xx (ARM Cortex-M0), NXP LPC176x (ARM Cortex-M3), Renesas RX600 (RX62N), Texas Instruments MSP430, Texas Instruments Stellaris LM3S8968 (ARM Cortex-M3), Texas Instruments Stellaris LM4F120H5QR (ARM Cortex-M4F), Atmel ATMEGA328/128 and Microchip PIC18 github.com/brtos/brtos
CapROS GNU GPL open source embedded active IA-32, ARM9 www.capros.org
ChibiOS/RT Mixed, GNU GPL or proprietary open source embedded, small footprint active x86, ARM7, ARM9, Cortex-M0-M3-M4, PowerPC e200z, STM8, STM32, AVR, MSP430, ColdFire, H8S www.chibios.org/dokuwiki/doku.php, sourceforge.net/projects/chibios
ChorusOS ? ? ? defunct SPARC, x86, PowerPC docs.sun.com/app/docs/prod/chorus5
ChronOS GNU GPL open source research, general purpose active x86, ARM chronoslinux.org
CoActionOS (now Stratify OS) Modified GNU GPL or proprietary open source embedded discontinued ARM Cortex-M3, LPC17xx www.coactionos.com
cocoOS BSD open source embedded active AVR, MSP430, STM32 www.cocoos.net
Concurrent CP/M,
became MP/M		 Proprietary closed (meanwhile: open source) general purpose, industrial historic 8080, Z80, 8086 Digital Research
Concurrent DOS,
became Multiuser DOS		 Proprietary closed general purpose, industrial defunct 8086, 286, 386, 68000, (also 8080/Z80 in dual-processor variants) Digital Research
Contiki BSD open source embedded, WSN active MSP430, AVR, ARM www.contiki-os.org
COS Proprietary closed process control defunct GEC 4000 series ?
CooCox CoOS BSD open source general purpose active STM32, NXP LPC1000, TI LM3S8962, Nuvoton NU1xx,Holtek HT32 www.coocox.org/CoOS.htm
Deos Proprietary closed safety critical active x86, PowerPC, MIPS www.ddci.com/products_deos.php
DioneOS Proprietary available for licensee embedded active MSP430, MSP430x www.elesoftrom.com.pl/en/os
distortos Mozilla open source embedded active ARMv6-M architecture (ARM Cortex-M0, ARM Cortex-M0+, ARM Cortex-M1): STM32F0, STM32L0; ARMv7-M architecture (ARM Cortex-M3, ARM Cortex-M4(F), ARM Cortex-M7(F)): STM32F1, STM32F4, STM32F7, STM32L4 distortos.org
DNIX Proprietary closed general purpose defunct 68000 ?
dnx RTOS GNU GPL, modified GPL, BSD open source embedded (Unix-like) active ARM Cortex-M3, STM32 www.dnx-rtos.org
GEC DOS Proprietary closed process control defunct GEC 4000 series ?
DSOS ? ? ? defunct TI-980A minicomputer ?
DSP/BIOS Free closed, available with license general purpose maintenance only Mostly Texas Instruments C2800, C5500, C6000 and OMAP DSP cores. Replaced by TI-RTOS, but available for download. www.ti.com/tool/dspbios
DSPnano RTOS Mixed, open source and commercial open source MCU, DSC, DSP SoC active R8C, M16C, PIC24, dsPIC33 www.rowebots.com/products/dspnano
DuinOS Modified GNU GPL open source general purpose active AVR (Arduino) code.google.com/p/duinos
eChronos AGPLv3 open source embedded active ARM Cortex-M3 - M7 https://web.archive.org/web/20190421081200/http://ts.data61.csiro.au/projects/TS/echronos/
eCos Modified GNU GPL open source embedded active ARM-XScale-Cortex-M, CalmRISC, 680x0-ColdFire, fr30, FR-V, H8, IA-32, MIPS, MN10300, OpenRISC, PowerPC, SPARC, SuperH, V8xx ecos.sourceware.org
eCosPro Modified GNU GPL or eCosPro license open source with non-free portions embedded active ARM7-9, Cortex-A5-A9-M3-M4-M7, 680x0-ColdFire, H8-H8S, IA-32, MIPS32, MIPS64, microMIPS, NIOS II, OpenRISC, PowerPC, SPARC, SH4/4A, TILE-Gx, XScale www.ecoscentric.com/ecos/ecospro.shtml
embOS Proprietary closed, available to customers, free object code for non-commercial use embedded, industrial, IoT, safety critical active ARM7/9/11, ARM Cortex-A/R/M, AVR, AVR32, C16x, CR16C, ColdFire, H8, HCS12, M16C, M32C, MSP430, NIOS2, PIC18/24/32, R32C, R8C, RISC-V, RL78, RH850, RX100/200/600/700, RZ, SH2A, STM8, ST7, V850, 78K0, 8051 www.segger.com/embos.html
Embox BSD open source embedded active ARM, LEON, MicroBlaze, MIPS, PowerPC, x86 github.com/embox/embox
Embkernel GNU LGPL open source embedded active ARM Cortex M sourceforge.net/p/embkernel
ERIKA Enterprise GPL and GPL linking exception open source embedded active ARM7, ARM Cortex-M, ARM Cortex-A (on Jailhouse hypervisor), Hitachi H8, Altera Nios2, Microchip dsPIC (including dsPIC30, dsPIC33, and PIC24), Microchip PIC32, ST Microelectronics ST10, Infineon C167, Infineon Tricore, Freescale PPC e200 (MPC 56xx) (including PPC e200 z0, z6, z7), Freescale S12XS, EnSilica eSi-RISC, AVR, Lattice Mico32, MSP430, Renesas RX200, x86-64 (on Jailhouse hypervisor) www.erika-enterprise.com
EUROS Proprietary closed embedded active 8/16/32 bit processors: among others AVR, 8051, XC800, 16FX, XC166, ARM, Cortex-M3, PowerPC, Nios II, MIPS32, PIC32 www.euros-embedded.com
EROS Modified GNU GPL open source experimental
research use		 dormant IA-32 www.eros-os.org
F9 microkernel Modified BSD open source embedded maintenance ARM Cortex-M3/M4 github.com/f9micro/f9-kernel
Femto OS GNU GPLv3 open source embedded active AVR www.femtoos.org
Flexible Safety RTOS Proprietary closed, available to customers embedded, safety critical active ARM9, ARM Cortex-M, ARM Cortex-R, ARM Cortex-A, ColdFire, QorIQ, Infineon TriCore, Infineon AURIX www.embedded-office.com
FlexOS Proprietary closed general purpose, industrial, POS defunct 186, 286, 386, V60, V70, 68000 Digital Research, Novell
FreeOSEK GNU GPLv3 open source embedded active Cortex-M4, MIPS, MSP430, SPARC LEON3 github.com/ciaa/Firmware
FreeRTOS MIT open source embedded active ARM, AVR, AVR32, ColdFire, HCS12, IA-32, Cortex-M3-M4-M7, Infineon XMC4000, MicroBlaze, MSP430, PIC, PIC32, Renesas H8/S, RX100-200-600-700, 8052, STM32, TriCore, EFM32 www.freertos.org
Frosted GNU GPL open source embedded, POSIX compliant, unix-like active ARM Cortex-M github.com/insane-adding-machines/frosted
Fuchsia Varies open source embedded active AArch64, x86-64 fuchsia.googlesource.com
FunkOS modified Sleepycat License open source embedded active AVR, MSP430, Cortex-M3 funkos.sourceforge.net
Fusion RTOS Free ? semi-general purpose active ARM, Blackfin, StarCore, DSP 56800E
FX-RTOS Proprietary source code provided embedded active ARMv6-M (Cortex-M0/M1), ARMv7-M (Cortex-M3), ARMv7-A (including Cortex A9 MPCore), x86, AVR32, PIC32, MIPS M4K, TI MSP430 rtos.eremex.com/products, fxrtos.ru
HeartOS Proprietary closed safety critical active x86, PowerPC, ARM www.ddci.com/products_heartos.php
Helium GNU LGPL open source Embedded Active HCS08, AVR helium.sourceforge.net
HP-1000/RTE ? ? ? ? ? www.hp.com/products1/rte/tech_support/documentation
Hybridthreads ? open source FPGA active Xilinx Virtex-II Pro ML310, Xilinx Virtex-II Pro XUP hthreads.csce.uark.edu/wiki/About_Hthreads
hyperCOS ? free evaluation (not open source) embedded active ARM7, ARM9, Cortex-R, Cortex-M3, Cortex-M4F socware.net
IBM 4680 OS Proprietary closed general purpose, industrial, POS defunct 286 IBM (DR Concurrent DOS 286 derivative)
IBM 4690 OS Proprietary closed general purpose, industrial, POS active 286, 386 IBM (DR FlexOS 286/386 derivative)
Integrity Proprietary closed embedded active ARM, XScale, Blackfin, ColdFire, MIPS, PowerPC, x86 www.ghs.com/products/rtos/integrity.html
INtime Proprietary closed embedded active x86 www.tenasys.com/intime
IntrOS MIT open source embedded, small footprint active ARM Cortex-M, STM8, AVR8 github.com/stateos/IntrOS
ITRON, µITRON Varies varies embedded active ARM, MIPS, x86, Renesas RX100-200-600-700-others www.tron.org, www.t-engine.org
ISIX GNU LGPL open source embedded active Cortex-M3 bryndza.boff.pl/index.php?dz=rozne&id=isixrtos
iRTOS GNU LGPL open source embedded active AVR, ARM7 irtos.sourceforge.net
KolibriOS GNU GPL open source embeddable active x86 www.kolibrios.org
Kithara RTS Proprietary closed general purpose, industrial active Windows extension, x86, x86-64, Windows XP-10 www.kithara.de
Lepton Mozilla open source embeddable active ARM9 (ATMEL AT91SAM9261, AT91SAM9260), ARM7 (ATMEL AT91SAM7x, AT91SAM7SE, AT91M55800), CortexM3 (ST STM32F103, Texas Instrument Stellaris) et CortexM4 (Freescale Kinetis) github.com/lepton-distribution/lepton
LithOS Proprietary ? embedded, industrial active LEON2-3-4, x86 www.fentiss.com, www.xtratum.org
LxWin Proprietary closed MS Windows extension active x86 https://www.acontis.com/lxwin.html
LynxOS Proprietary source code available embedded active Motorola 68010, x86/IA-32, ARM, Freescale PowerPC, PowerPC 970, LEON www.lynuxworks.com/rtos
Maestro Proprietary closed embedded active ARMv7-A, ARMv8-A, PowerPC64, IA-32 www.hipperos.com/maestro
Mark3 BSD open source embedded active, beta ? www.mark3os.com
MaRTE OS GNU GPL open source embedded active IA-32 marte.unican.es
MAX II,IV Proprietary ? ? ? MODCOMP II, IV, ... ?
MenuetOS GNU GPL open source ? active IA-32 www.menuetos.net
Menuet 64 Proprietary unknown ? active IA-32, x86-64 ?
MicroC/OS-II Proprietary Available under license embedded active ARM7-9-11/Cortex-M1-3-4-A8/9, AVR, HC11/12/S12, ColdFire, Blackfin, MicroBlaze, NIOS, 8051, x86, Win32, H8S, M16C, M32C, MIPS, 68000, PIC24-dsPIC33-PIC32, MSP430, PowerPC, SH, StarCore, Renesas RX100-200-600-700, RL; STM32, … micrium.com/rtos/ucosii/overview
MicroC/OS-III Proprietary Available under license embedded active ARM7-9-11/Cortex-M1-3-4-A8/9, AVR, HC11/12/S12, ColdFire, Blackfin, MicroBlaze, NIOS, 8051, x86, Win32, H8S, M16C, M32C, MIPS, 68000, PIC24/dsPIC33/PIC32, MSP430, PowerPC, SH, StarCore, Renesas RX100-200-600-700, RL; STM32, … micrium.com/rtos/ucosiii/overview
Milos GNU GPL open source embedded active Cortex-M3 www.milos.it
miosix GNU GPL open source embedded active stm32, efm32 e LPC2000 www.miosix.org
mipOS Proprietary open source embedded active Cortex-M3, ST7, STM8, x86 sites.google.com/site/eantcal/home/mipos
Microsoft Invisible Computing (MMLite) Proprietary open source embedded active ARM7-9, i386, h8, mips, Trimedia, eCog1 research.microsoft.com/invisible
mLithOS Proprietary ? embedded, industrial active LEON2-3-4, x86 www.fentiss.com, www.xtratum.org
MP/M Proprietary closed (meanwhile: open source) general purpose, industrial defunct 8080, Z80, 8086 Digital Research
MQX Proprietary complimentary source code available embedded active Freescale Power, ColdFire, Kinetis Cortex ARM, List of Freescale products www.freescale.com/mqx
MERT ? ? ? inactive PDP-11 ?
Multiuser DOS Proprietary closed general-purpose, industrial defunct 386 Digital Research/Novell, Concurrent Controls, Datapac, IMS (see REAL/32)
Nano-RK Mixed open source embedded, WSN active AVR, MSP430 www.nanork.org
Neutrino Proprietary some source code provided microkernel active ARM, MIPS, PPC, SH, x86, XScale www.qnx.com/products/neutrino_rtos
NI Linux Real-Time Proprietary developed from open source data acquisition and process control active National Instruments CompactRIO controllers www.ni.com/white-paper/14627/en/
nOS Mozilla open source embedded active AVR, MSP430, Cortex-M0-M3-M4, M16C, RX600, PIC24, Win32, POSIX, STM8 github.com/jimtremblay/nOS
Nucleus RTOS Proprietary source code provided embedded active ARM (Cortex-M3-M4-R4-R4F-A8-A9, ARM7-9-11), PowerPC, MIPS32-16e, microMIPS, ColdFire, SuperH www.mentor.com/embedded-software/nucleus
NUFR Modified BSD open source embedded active ARM (Cortex-M0,-M3,-M4), MSP430, MSP430X (16- and 20-bit models) ragingdist.org
Nut/OS BSD open source embedded, industrial active AVR, AVR32, ARM7, ARM9, Cortex-M3 www.ethernut.de/en/firmware/nutos.html
NuttX BSD open source embedded, small footprint active Linux user mode, ARM7-9, Cortex-A5-A8-A9-M0-M3-M4-M7, 8052, Espressif ESP32, Lattice LM32, Renesas MC16C/26/SH-1, RISC-V , Zilog Z16F, Zilog eZ80 Acclaim!, Zilog Z8Encore!, Z80, MIPS PIC32MX, PIC32MZ www.nuttx.org
OpenEPOS Proprietary open source embedded active ARM, x86, AVR, MIPS, PowerPC epos.lisha.ufsc.br
OS20 Proprietary closed embedded (STB) maintenance only ST20 ?
OS2000 Proprietary ? embedded active MIPS (Baget-MIPS variant), KOMDIV-32, KOMDIV-64, Intel BSPs (x86 architecture) www.niisi.ru/otd07.htm
OS21 Proprietary source code provided embedded (STB) active ST40/SH4,ST200,ARM ?
OS4000 Proprietary closed process control maintenance only GEC 4000 series ?
OpenRTOS Proprietary source code available embedded active Same as FreeRTOS www.highintegritysystems.com/rtos/openrtos
OSA BSD open source embedded active PIC10-PIC24, AVR 8-bit, STM8 wiki.pic24.ru/doku.php/en/osa/ref/intro
OSE Proprietary available to customers general purpose active ARM, PowerPC, x86, TI OMAP, … www.enea.com/ose
OS-9 Proprietary available to customers embedded active ARM-strongARM, MIPS, PowerPC, SuperH, x86/Pentium, XSCALE, Motorola 6809, 680x0, SPARC www.microware.com
OSEK Mixed, open source and commercial specification embedded active engine control units www.osek-vdx.org (not working for a while), better refer to www.autosar.org
Partikle Proprietary ? embedded, industrial active LEON2-3-4, x86 www.fentiss.com, www.xtratum.org
Phar Lap ETS ? ? ? ? ? ?
PaulOS GNU GPL open source embedded ? ? paulos.2038bug.com
PICOS18 GNU GPL open source embedded ? PIC18 ?
picoOS Modified BSD open source embedded maintenance 6502, 80x86, ARM7, AVR, PowerPC,Cortex-M,MSP430,PIC32 picoos.sourceforge.net,github.com/AriZuu/picoos
Piko/RT Modified BSD open source embedded active ARM Cortex-M3/M4 github.com/pikort/pikoRT
Pharos Apache 2.0 open source embedded, industrial, safety critical active ARM (ARM926, Cortex-R5, Cortex-M4, Cortex-A53 - 64 bits), RISC-V (64 bits) (all with memory protection) sourceforge.net/projects/rtospharos/
Phoenix-RTOS Proprietary ? embedded ? ARM7, IA-32, eSI-RISC www.phoenix-rtos.org
PikeOS Proprietary available to customers certifiable safety & security, embedded virtualisation active PPC, x86, ARM, MIPS, SPARC-LEON, www.sysgo.com/pikeos
Portos Proprietary source code provided embedded, small footprint active (ARM soon) www.portos.org
POK BSD open source embedded active x86, PowerPC, SPARC pok-kernel.github.io
PowerTV Proprietary ? ? ? ? www.powertv.com
Prex BSD open source microkernel active ARM, IA-32 prex.sourceforge.net
Protothreads BSD open source general purpose active Architecture independent dunkels.com/adam/pt/
pSOS Proprietary ? ? discontinued 680x0 ?
QNX Proprietary ? general purpose, medical devices active IA-32, MIPS, PowerPC, SH-4, ARM, StrongARM, XScale www.qnx.com
QP Dual, open source and commercial dual MCU, DSC, DSP SoC active ARM7/9, ARM Cortex-M3-M0, MSP430, TMS320C28x, AVR, AVRXmega, ColdFire, 68HC08, M16C/R8C, H8, 8051, 80251, PIC18, PIC24/dsPIC33, Nios II, PSoC1 www.state-machine.com/qp
Quest Apache 2.0 open source embedded / mixed-criticality active x86 www.questos.org
Kaspersky OS Proprietary ? safety critical, virtualization active ? ?
Data General RDOS Proprietary ? general purpose defunct Data General Nova, Data General Eclipse ?
ReaGOS Proprietary closed, available with license embedded active x86, ATmega, ARM, portable www.reagos.com
REAL/32 Proprietary closed general-purpose, industrial active 386 IMS (Multiuser DOS derivative)
RedHawk Linux (RHEL, CentOS; Ubuntu compatible) Proprietary closed, available with license Hard Real-Time: server, workstation; embedded active x86, ARM www.concurrent-rt.com/products/redhawk-linux
Real-time Linux (CONFIG_RT_PREEMPT) GNU GPLv2 open source general purpose active same as Linux www.osadl.org/Realtime-Linux.projects-realtime-linux.0.html, rt.wiki.kernel.org, wiki.linuxfoundation.org/realtime/start
REX OS Proprietary closed, available with license embedded inactive ARM ja:REX OS
RIOT GNU LGPL open source embedded active ARM, MSP430, AVR, x86 www.riot-os.org
RMX Proprietary closed embedded defunct 8080, 8086, 80386 or higher www.tenasys.com/rmx
RODOS BSD source code provided embedded active ARMv7 (M3, A8, A9), AVR32, PowerPC 405, sparc64

Platforms: SmartFusion2, RaspberryPi, STM32 On top of OS: Linux, Windows, MacOS, FreeRTOS, RTems

rodos download
RSX-11 Proprietary ? ? historic PDP-11 n/a
RT-11 Proprietary ? general purpose defunct PDP-11 n/a
RTAI GNU GPL open source general purpose active x86, ARM www.rtai.org
RTEMS modified GNU GPL open source embedded active ARM, Blackfin, ColdFire, TI C3x/C4x, H8/300, x86, 68k, Milkymist SoC, MIPS, Nios II, PowerPC, SuperH, SPARC, ERC32, LEON, Mongoose-V rtems.com
RTLinux GNU GPL open source general purpose inactive same as Linux n/a
RT-Thread Apache 2.0 open source embedded active ARM, ARM Cortex-M0-M3-R4-M4-M7, IA-32, AVR32, Blackfin, nios, PPC, M16C, MIPS (loongson-1b-1c, PIC32，xburst), MicroBlaze, V850, unicore32, code.google.com/p/rt-thread, www.rt-thread.org
RTXC Quadros Proprietary source available embedded active ARM - Atmel/Freescale/NXP/ST/TI, Blackfin, 680x0-ColdFire, PowerPC, StarCore, TI-Luminary Stellaris, TI OMAP, XScale www.quadros.com/products/operating-systems
RTX, RTX64 Proprietary closed MS Windows extension active x86, x86-64 www.intervalzero.com/rtx.htm
RTX Keil Real-Time Operating System Proprietary, royalty free source available embedded active ARM www.keil.com/arm/rl-arm/kernel.asp
Ruff Proprietary closed embedded,general purpose, industrial, IoT active ARM, MIPS, x86 ruff.io/docs/faq.html
RX116 ? ? embedded, industrial defunct NEC V20, NEC V30, NEC V40, NEC V50 first ITRON 1 compatible 16-bit RTOS
RX616 ? ? safety critical, embedded, industrial defunct NEC V60, NEC V70 32-bit ITRON compatible
RX-UX832 ? ? embedded, industrial, general-purpose defunct NEC V60, NEC V70 32-bit Unix-like RTOS
SafeRTOS Proprietary source code & Design Assurance Pack available embedded, safety critical active Same as FreeRTOS Same as FreeRTOS
SCIOPTA Proprietary closed, source available embedded, safety related active ARM, Cortex-M0-M3-M4, Cortex-R4, Cortex-A5, Cortex-A7, Cortex-A9, Cortex-A53, XScale, Renesas RX100, RX200, RX600, RX700, PowerPC, ColdFire, HCS12, M16C, Windows (simulation), Aurix TC2xx, BlackFin BF52x, BF70x www.sciopta.com
scmRTOS Free open source embedded active ARM, Cortex-M3, Blackfin, MSP430, AVR, STM8 scmrtos.sourceforge.net
SDPOS GNU LGPL open source embedded active ARM, Cortex-M3, Blackfin, PIC18, PIC24, i386 win32/linux synthetic targets www.sdpos.org
SHaRK GNU GPL open source ? inactive ? shark.sssup.it
silRTOS Free open source embedded active ARM, Cortex-M3 Cortex-A9 ARM-11MP, Blackfin, MIPS, AVR spanidea.com/products.php
Simba MIT open source embedded active, beta Arduino Nano (AVR), Arduino Mega (AVR), Arduino Due (ARM), ESP8266, ESP32, cygwin/linux simba-os.readthedocs.org/en/latest
SimpleAVROS GNU GPLv3 open source embedded active, beta AVR only n/a
SINTRAN III ? ? ? ? Norsk Data computers n/a
SOOS Project Free open source embedded active, beta H8/300 www.ingelec.uns.edu.ar/rts/soos
StateOS MIT open source embedded, small footprint active ARM Cortex-M, STM8 github.com/stateos/StateOS
Stratify OS Modified GNU GPL or proprietary open source embedded active ARM Cortex-M3, M4 stratifylabs.co/Stratify-OS/
Symbian OS Eclipse open source embedded defunct ARM www.symbian.org
Talon DSP RTOS Proprietary ? embedded DSP active TMS320 www.blackhawk-dsp.com/Talon.aspx
TargetOS Proprietary available to customers embedded active ARM, Cortus, Freescale ColdFire, PowerPC www.blunkmicro.com/os.htm
T-Kernel T-License source available embedded RTOS active ARM, MIPS, SH, more www.t-engine.org
THEOS ? ? ? ? ? www.theos-software.com
ThreadX Proprietary available to customers ? active ARC, ARM/Thumb, AVR32, BlackFin, 680x0-ColdFire, H8-300H, Luminary Micro Stellaris, M-CORE, MicroBlaze, PIC24-dsPIC, PIC32, MIPS, V8xx, Nios II, PowerPC, Renesas RX100, RX200, RX600, RX700, Synergy, SH, SHARC, StarCore, STM32, StrongARM, TMS320C54x, TMS320C6x, x86/x386, XScale, Xtensa/Diamond, ZSP rtos.com/solutions/threadx/
TizenRT Apache 2.0 open source embedded active ARM github.com/Samsung/TizenRT
TI-RTOS Kernel (SYS/BIOS) BSD open source embedded active Mostly Texas Instruments: MSP430-432, C2000-5000-6000, TI's ARM families (Cortex M3-4F-R4-A8-A15), SimpleLink Wireless CC2xxx-CC3xxx www.ti.com/tool/sysbios
Tock OS Apache 2.0/MIT open source embedded active ARM Cortex https://web.archive.org/web/20190710014852/https://www.tockos.org/
Trampoline Operating System (OSEK and AUTOSAR) GNU GPLv2 open source embedded active AVR, H8-300H, POSIX, NEC V850e, ARM7, Infineon C166, HCS12 or PowerPC trampoline.rts-software.org
TNKernel BSD open source embedded active ARM, PIC24-32-dsPIC, HCS08, STM32 (Cortex-M3) www.tnkernel.com
TNeo BSD open source embedded active Cortex-M0-M0+-M1-M3-M4-M4F, PIC24-32-dsPIC github.com/dimonomid/tneo
Transaction Processing Facility Proprietary ? general purpose active IBM System/360 derivatives www.ibm.com/software/htp/tpf
TRON project Free mixed mixed active any: is a specification, not an implementation www.tron.org/index-e.html
TUD:OS GNU GPL open source ? active ARM, IA-32, x86-64 demo.tudos.org/eng_about.html
Unison RTOS Mixed, open source and commercial open source MCU, DSC, DSP SoC, FPGA active Pic32, ARM Cortex (TI Stellaris Tiva Sitara, ST STM32, NXP LPC1X00, Freescale iMX6 Kinetis, Renesas RZ, RX600, SH2A, SH2AFPU, R32C, MIPS4K, {SHARC, ColdFire, Xilinx MicroBlaze, proprietary} www.rowebots.com/en/products/unison-rtos-article
UNIX-RTR ? ? ? defunct PDP-11 ?
uSmartx BSD open source embedded ? ARM7TDMI, AVR, H8 usmartx.sourceforge.net
u-velOSity Proprietary ? microkernel active ? www.ghs.com/products/micro_velosity.html
velOSity ? ? ? active Power ISA, ARM/XScale, MIPS, x86/Pentium, ColdFire, Blackfin, OMAP, DaVinci www.ghs.com/products/velosity.html
VRTX Proprietary ? ? superseded by Nucleus RTOS ARM, MIPS, PowerPC, RISC www.mentor.com/embedded-software/nucleus
VxWorks Proprietary ? embedded active ARM, IA-32, Intel 64, MIPS, PowerPC, SH-4, StrongARM, xScale www.windriver.com/products/vxworks
Windows CE Proprietary Microsoft Shared Source embedded active x86, MIPS, ARM, SuperH www.microsoft.com/windowsembedded
Xenomai GNU GPLv2 open source general active x86, x86-64, PowerPC, ARM, Analog Devices Blackfin BF52x, BF53x, BF54x and BF56x www.xenomai.org
XMK BSD open source embedded inactive-beta ? www.integerfox.com/xmk
Simulink Real-Time Proprietary closed real-time testing-embedded active x86 www.mathworks.com/products/simulink-real-time
Y@SOS GNU LGPL open source embedded active Cortex-M3, STM32 www.yasos.org
MontaVista Linux GNU GPL open source embedded active ? www.mvista.com
UNOS ? ? ? historic 680x0 ?
uOS GNU GPL open source embedded active AVR, ARM, MIPS32, MSP430, Intel i386, Linux386 code.google.com/p/uos-embedded/wiki/about
Huawei LiteOS BSD open source embedded active ARM (M0/3/4/7, A7/17/53, ARM9/11), X86,RISC-V www.huawei.com/minisite/liteos/en/about.html
Zephyr Apache 2.0 open source embedded active ARM (Cortex-M0, Cortex-M3, Cortex-M4, Cortex-M23, Cortex-M33), x86, ARC, RISC-V, Nios II, Xtensa www.zephyrproject.org

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