3699:
3689:
2555:
2545:
25:
556:) support (USBX). ThreadX has won high appraisal from developers and is a very popular RTOS. As of 2017, according to marketing research firm VDC Research, the ThreadX RTOS has become one of the most popular RTOSes in the world, having been deployed in over 6.2 billion devices, including consumer electronics, medical devices, data networking applications, and SoCs.
1165:
networking along with protocols such as ARP, Auto IP, DHCP, DNS, DNS-SD, FTP, HTTP, ICMP, IGMP, mDNS, POP3, PPP, PPPoE, RARP, TFTP, SNTP, SMTP, SNMP, and TELNET. IP layer network security is provided by IPsec. TCP and UDP socket layer security is provided by TLS and DTLS, respectively. IoT Cloud
1034:
ThreadX implements a priority-based, preemptive scheduling algorithm with a proprietary feature called preemption-threshold. The latter has been shown to provide greater granularity within critical sections, reduce context switches, and has been the subject of academic research on guaranteeing
1182:) system for ThreadX. USBX supports both host and device. Host controller support includes EHCI, OHCI, and proprietary USB host controllers. USBX also supports OTG. USBX class support includes Audio, Asix, CDC/ACM, CDC/ECM, DFU, GSER, HID, PIMA, Printer, Prolific, RNDIS, and Storage.
1116:
formats. The latter extends FAT file sizes beyond 4 GB, which is especially useful for video files, and it requires license directly from
Microsoft for use. FileX also offers fault tolerance and supports direct NOR and NAND
1042:(APIs) that can signal an external event. This helps applications chain together various public objects in ThreadX such that one thread can effectively block on multiple objects.
1652:
2760:
1381:
531:
304:
1399:
3730:
3693:
1057:, software timers, fixed sized block memory, and variable sized block memory. All APIs in ThreadX that block on resources also have an optional timeout.
1359:
2549:
1645:
1510:
1583:
987:
ThreadX was first introduced in 1997. ThreadX 4 was introduced in 2001. ThreadX 5 was introduced in 2005, and is the latest version as of 2020.
2593:
3745:
3740:
2559:
1638:
3750:
3469:
2327:
481:
2362:
1039:
108:
523:
46:
39:
437:
on April 18, 2019 and renamed it to Azure RTOS. On
November 21, 2023, Microsoft announced Azure RTOS would be transitioning to an
1267:
3494:
2139:
3378:
3352:
3346:
3340:
3334:
2316:
3533:
2414:
2176:
1038:
ThreadX provides a unique construct called event chaining, where the application can register a callback function on all
3025:
1804:
218:
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1717:
198:
89:
1489:
61:
3674:
3521:
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2407:
1661:
504:
403:
338:
1425:
35:
3561:
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3436:
3178:
3109:
3064:
3043:
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2586:
2287:
2054:
1922:
1822:
1625:
1167:
508:
324:
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2975:
2439:
2401:
2107:
1297:
1275:
1231:
1130:
527:
407:
155:
68:
1426:"High Performance RTOS "ThreadX": Express Logic: Enabling Shorter Time to Market and Reduced Development Cost"
3507:
3302:
3049:
2275:
1834:
1758:
1443:
1317:
1050:
1046:
549:
1190:
ThreadX (and FileX and NetX Duo) have been precertified by SGS-TÜV Saar to the following safety standards:
3725:
2892:
2852:
2446:
2369:
1064:
support via either AMP or SMP. Application code isolation is available through ThreadX Modules component.
516:
512:
1518:
75:
3735:
3703:
3218:
3149:
3102:
2833:
2644:
2623:
2133:
2025:
1591:
1468:
1289:
419:
3682:
3527:
3189:
2809:
2579:
2538:
2333:
1949:
1564:
1338:
1212:
ThreadX (and FileX and NetX Duo) have been precertified by UL to the following safety standards: UL/
1061:
703:
500:
485:
292:
150:
57:
3641:
1235:
802:
484:
features. Major distinguishing technology characteristics of ThreadX include preemption-threshold,
3550:
3085:
2768:
2435:
1931:
1539:
1490:"Event Chaining Enables Real-Time Systems to Respond to Multiple Real-Time Events More Efficient"
829:
775:
541:
457:
442:
247:
142:
3626:
3611:
3591:
2671:
2482:
2150:
1206:
1013:
934:
736:
473:
465:
330:
308:
284:
1221:
2912:
2863:
2650:
2234:
1670:
1149:
host tool called GUIX Studio automatically generates C code for GUIX to execute at runtime.
1142:
602:
590:
493:
477:
364:
280:
3596:
3294:
2689:
2065:
1745:
1255:
913:
468:, i.e., it switches threads. ThreadX provides priority-based, preemptive scheduling, fast
276:
263:
243:
3636:
3621:
3601:
3123:
2739:
2639:
2487:
1998:
1877:
1872:
1565:"NASA's "Deep Impact" employs embedded systems to score bullseye 80 million miles away"
1138:
1134:
566:
352:
3719:
3646:
3616:
2787:
2243:
1991:
1862:
1630:
1054:
423:
82:
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3031:
2732:
2726:
2507:
2502:
1849:
1810:
1285:
1118:
874:
427:
316:
1308:, and continues to operate in a more privileged role even after the boot process.
1230:
standards by various military and aerospace companies. It is supported by popular
3481:
3131:
3127:
2606:
2602:
2530:
2492:
2387:
2257:
1293:
1278:
1251:
1137:(environment) for embedded applications running ThreadX. GUIX supports multiple
993:
NetX – the embedded TCP/IP networking stack for ThreadX was introduced in 2002.
545:
446:
438:
369:
341:
334:
173:
24:
1266:
Some high-profile products using ThreadX range from small wearable devices, to
3583:
3487:
3451:
2803:
2474:
2355:
2222:
1170:
and 6LoWPAN. In 2017, ThreadX and NetX Duo became a Thread
Certified Product.
489:
345:
224:
130:
1620:
1382:"How Does The Express Logic Acquisition Help Microsoft and the IoT Ecosystem"
3631:
3606:
3370:
3240:
3230:
3138:
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2497:
2375:
2349:
2269:
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1217:
1213:
1199:
1195:
1191:
1023:
1009:
469:
434:
137:
2571:
1157:
NetX Duo is the embedded TCP/IP system for ThreadX. NetX Duo supports both
552:(TCP/IP) and cloud connectivity (NetX/NetX Duo), and Universal Serial Bus (
3457:
3414:
3278:
3210:
3018:
2898:
2826:
2794:
2678:
2381:
2321:
2263:
1970:
1867:
1828:
1797:
1706:
667:
652:
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protocol support includes CoAP, MQTT, and LWM2M. NetX Duo also supports
3573:
3500:
3463:
3360:
3329:
3308:
3283:
3256:
3249:
3158:
2939:
2930:
2845:
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2310:
2250:
2228:
2165:
2126:
2080:
2034:
2012:
1751:
1301:
1250:
As of 2017, ThreadX is packaged as part of X-Ware IoT Platform in full
1239:
1146:
1141:
with a variety of screen resolutions and color depths. Many predefined
534:
296:
3567:
3444:
3204:
3198:
3171:
3164:
3090:
3079:
3073:
2994:
2963:
2745:
2302:
2205:
2191:
2179:
2047:
2040:
2005:
1964:
1958:
1778:
1769:
1733:
1711:
1343:
1227:
1202:
990:
FileX – the embedded file system for ThreadX was introduced in 1999.
964:
449:. With Eclipse Foundation as the new home, Azure RTOS was renamed to
300:
1304:, which in turn is used to boot secondary operating systems such as
1006:
999:
ThreadX SMP for SMP multi-core environments was introduced in 2009.
996:
USBX – the embedded USB support for ThreadX was introduced in 2004.
3320:
3116:
3037:
2988:
2918:
2905:
2874:
2716:
2633:
2394:
2198:
1907:
1816:
1681:
1305:
1113:
1109:
1105:
1101:
682:
418:
ThreadX was initially developed and marketed by
Express Logic of
3001:
2704:
2698:
2452:
2345:
2159:
2074:
1938:
1901:
1700:
1360:"Bill Lamie: Story of a man and his real-time operating systems"
1271:
1162:
1158:
2575:
1634:
430:
in 1990. William Lamie was
President and CEO of Express Logic.
3475:
2969:
2776:
2339:
2182:
2117:
1982:
1739:
1179:
1100:
FileX is the embedded file system for ThreadX. FileX supports
553:
312:
288:
18:
1469:"Scheduling Fixed-Priority Tasks with Preemption Threshold"
1121:
media through a flash wear leveling product called LevelX.
1019:
GUIX – the embedded UI for ThreadX was introduced in 2014.
519:(MPU) memory protection is available with ThreadX Modules.
492:
design, event-chaining, and small size: minimal size on an
460:
that are used as the executable elements, and the letter
445:, and making the project available under the permissive
1615:
1022:
Express Logic was purchased for an undisclosed sum by
548:
support (FileX), embedded UI support (GUIX), embedded
433:
Express Logic was purchased for an undisclosed sum by
380:
526:(TÜV, English: Technical Inspection Association) and
540:
ThreadX is the foundation of
Express Logic's X-Ware
488:, efficient timer management, fast software timers,
250:: including sensors, devices, edge routers, gateways
3582:
3549:
3400:
3369:
3319:
3293:
3239:
3229:
3188:
3148:
3063:
3010:
2883:
2873:
2862:
2715:
2688:
2660:
2622:
2613:
2473:
2434:
2215:
2175:
2149:
2116:
2092:
2064:
2024:
1981:
1948:
1921:
1894:
1848:
1789:
1768:
1690:
1680:
1669:
1358:Cole, Bernard; McConnel, Toni (September 3, 2010).
375:
363:
351:
323:
272:
262:
254:
239:
217:
197:
179:
169:
161:
149:
129:
1400:"Microsoft Contributes Azure RTOS to Open Source"
1375:
1373:
1053:with optional priority inheritance, event flags,
522:ThreadX has extensive safety certifications from
1621:Eclipse ThreadX Source Code Repository | Github
532:Motor Industry Software Reliability Association
3694:Category: Microkernel-based operating systems
2587:
1646:
544:(IoT) platform, which also includes embedded
8:
1540:"wolfSSL with Improved ThreadX/NetX Support"
1005:ThreadX achieved safety certifications for:
530:(formerly Underwriters Laboratories) and is
124:
1178:USBX is the embedded Universal Serial Bus (
3236:
2880:
2870:
2619:
2594:
2580:
2572:
2544:
1855:
1687:
1677:
1653:
1639:
1631:
426:, who was also the original author of the
422:, United States. The author of ThreadX is
123:
511:(SMP). Application thread isolation with
406:(RTOS) programmed mostly in the language
109:Learn how and when to remove this message
1002:ThreadX Modules was introduced in 2011.
1330:
1444:"IoT & Embedded Operating Systems"
1133:(GUI) for ThreadX. GUIX provides a 2D
402:) is a highly deterministic, embedded
45:Please improve this article by adding
456:The name ThreadX is derived from the
7:
1584:"What's Wrong with the Raspberry Pi"
3731:Microkernel-based operating systems
1226:ThreadX has also been certified to
441:model under the stewardship of the
1040:application programming interfaces
453:, or "ThreadX" in its short form.
14:
1380:Janakiram, MSV (April 21, 2019).
1339:"Releases · eclipse-rtos/Threadx"
1125:Embedded graphical user interface
1079:Embedded graphical user interface
1072:ThreadX RTOS components include:
480:, event notification, and thread
3698:
3697:
3688:
3687:
2554:
2553:
2543:
1582:nachoparker (February 2, 2019).
23:
2140:Transaction Processing Facility
1045:ThreadX also provides counting
1476:Department of Computer Science
524:Technischer Überwachungsverein
203:6.4.1 / February 28, 2024
1:
1300:(GPU). This controls initial
476:, interthread communication,
47:secondary or tertiary sources
3746:Real-time operating systems
3741:Microsoft operating systems
2948:Multi-Environment Real-Time
1718:Multi-Environment Real-Time
1662:Real-time operating systems
1511:"Thread Certified Products"
1467:Wang, Yun; Saksena, Manas.
185:; 27 years ago
3767:
3751:Assembly language software
577:Precision Microcontrollers
505:asymmetric multiprocessing
404:real-time operating system
359:Embedded UI support (GUIX)
16:Real-time operating system
3660:
2516:
1858:
1823:Operating System Embedded
1569:Military Embedded Systems
1145:are available. A Windows
509:symmetric multiprocessing
496:processor is about 2 KB.
2108:Windows Embedded Compact
1298:graphics processing unit
1268:Hewlett-Packard printers
1232:Transport Layer Security
1131:graphical user interface
503:environments via either
135:Express Logic (original)
1318:Intel Management Engine
550:Internet protocol suite
283:, Blackfin, CEVA, C6x,
3704:Category: Microkernels
2447:Robot Operating System
1290:single-board computers
517:memory protection unit
513:memory management unit
205:; 6 months ago
34:relies excessively on
1478:. University of Utah.
1129:GUIX is the embedded
420:San Diego, California
3683:Open-source software
3190:Java virtual machine
2539:Open-source software
1950:Java virtual machine
1626:ThreadX-OX-Simulator
1254:and with no runtime
1186:Safety certification
1096:Embedded file system
1088:Safety certification
1076:Embedded file system
1062:multi-core processor
583:ULP Microcontrollers
501:multi-core processor
486:priority inheritance
3642:Andrew S. Tanenbaum
1153:Embedded networking
1082:Embedded networking
1026:on April 18, 2019.
622:ARM Cortex-A 64-bit
560:Supported platforms
126:
1292:runs ThreadX as a
780:ColdFire+/ColdFire
542:Internet of things
443:Eclipse Foundation
143:Eclipse Foundation
3713:
3712:
3627:James G. Mitchell
3612:Per Brinch Hansen
3431:
3430:
3266:
3265:
3059:
3058:
2755:
2754:
2672:Mac OS nanokernel
2569:
2568:
2297:
2296:
2151:Texas Instruments
1917:
1916:
1844:
1843:
1262:Products using it
1143:graphical widgets
951:SimpleLink MSP432
935:Texas Instruments
499:ThreadX supports
474:memory management
466:context switching
389:
388:
119:
118:
111:
93:
3758:
3701:
3700:
3691:
3690:
3237:
3065:Capability-based
2881:
2871:
2620:
2596:
2589:
2582:
2573:
2557:
2556:
2547:
2546:
2235:ERIKA Enterprise
1923:Capability-based
1856:
1688:
1678:
1655:
1648:
1641:
1632:
1616:Official website
1603:
1602:
1600:
1599:
1590:. Archived from
1579:
1573:
1572:
1561:
1555:
1554:
1552:
1551:
1536:
1530:
1529:
1527:
1526:
1517:. Archived from
1507:
1501:
1500:
1494:
1486:
1480:
1479:
1473:
1464:
1458:
1457:
1455:
1454:
1440:
1434:
1433:
1421:
1415:
1414:
1412:
1410:
1396:
1390:
1389:
1377:
1368:
1367:
1355:
1349:
1348:
1335:
1068:Major components
975:Zynq UltraScale+
625:ARMv8M TrustZone
494:ARM architecture
478:mutual exclusion
394:(formerly named
385:
382:
376:Official website
311:, V850, Xtensa,
244:Embedded systems
240:Marketing target
235:
232:
230:
229:/eclipse-threadx
228:
226:
213:
211:
206:
193:
191:
186:
127:
121:Operating system
114:
107:
103:
100:
94:
92:
51:
27:
19:
3766:
3765:
3761:
3760:
3759:
3757:
3756:
3755:
3716:
3715:
3714:
3709:
3686:
3656:
3597:Thomas Bushnell
3578:
3545:
3427:
3396:
3365:
3315:
3289:
3262:
3225:
3184:
3144:
3055:
3006:
2865:
2858:
2751:
2711:
2684:
2656:
2609:
2600:
2570:
2565:
2542:
2512:
2469:
2430:
2293:
2211:
2171:
2145:
2112:
2088:
2060:
2020:
1977:
1944:
1913:
1890:
1840:
1785:
1764:
1746:Real-Time Linux
1672:
1665:
1659:
1612:
1607:
1606:
1597:
1595:
1581:
1580:
1576:
1563:
1562:
1558:
1549:
1547:
1538:
1537:
1533:
1524:
1522:
1509:
1508:
1504:
1492:
1488:
1487:
1483:
1471:
1466:
1465:
1461:
1452:
1450:
1442:
1441:
1437:
1424:Carbone, John.
1423:
1422:
1418:
1408:
1406:
1398:
1397:
1393:
1379:
1378:
1371:
1357:
1356:
1352:
1337:
1336:
1332:
1327:
1314:
1264:
1256:royalty payment
1248:
1188:
1176:
1155:
1139:display devices
1127:
1098:
1070:
1060:ThreadX offers
1032:
985:
980:
562:
482:synchronization
451:Eclipse ThreadX
416:
392:Eclipse ThreadX
379:
354:
264:Package manager
223:
209:
207:
204:
189:
187:
184:
180:Initial release
141:
136:
125:Eclipse ThreadX
122:
115:
104:
98:
95:
52:
50:
44:
40:primary sources
28:
17:
12:
11:
5:
3764:
3762:
3754:
3753:
3748:
3743:
3738:
3733:
3728:
3718:
3717:
3711:
3710:
3708:
3707:
3678:
3670:
3668:= discontinued
3661:
3658:
3657:
3655:
3654:
3649:
3644:
3639:
3637:Richard Rashid
3634:
3629:
3624:
3622:Jochen Liedtke
3619:
3614:
3609:
3604:
3602:David Cheriton
3599:
3594:
3588:
3586:
3580:
3579:
3577:
3571:
3565:
3559:
3557:
3547:
3546:
3544:
3543:
3537:
3531:
3512:
3504:
3498:
3491:
3485:
3479:
3473:
3467:
3461:
3455:
3449:
3441:
3432:
3429:
3428:
3426:
3425:
3406:
3404:
3398:
3397:
3395:
3394:
3387:
3381:
3375:
3373:
3367:
3366:
3364:
3363:
3358:
3357:
3356:
3353:Icaros Desktop
3350:
3344:
3332:
3326:
3324:
3317:
3316:
3314:
3299:
3297:
3291:
3290:
3288:
3287:
3279:Classic Mac OS
3275:
3267:
3264:
3263:
3261:
3260:
3253:
3245:
3243:
3234:
3227:
3226:
3224:
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3185:
3183:
3182:
3176:
3168:
3162:
3155:
3153:
3146:
3145:
3143:
3142:
3124:HarmonyOS NEXT
3120:
3113:
3106:
3100:
3093:
3069:
3067:
3061:
3060:
3057:
3056:
3054:
3053:
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3035:
3029:
3023:
3014:
3012:
3008:
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3005:
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2991:
2986:
2979:
2973:
2967:
2960:
2944:
2936:
2935:
2934:
2928:
2916:
2909:
2902:
2896:
2889:
2887:
2878:
2868:
2860:
2859:
2857:
2856:
2849:
2846:TI-RTOS kernel
2843:
2837:
2830:
2823:
2822:Off++ → Plan B
2820:
2813:
2807:
2800:
2799:
2798:
2784:
2781:
2773:
2765:
2756:
2753:
2752:
2750:
2749:
2742:
2737:
2736:
2735:
2722:
2720:
2713:
2712:
2710:
2709:
2694:
2692:
2686:
2685:
2683:
2682:
2675:
2667:
2665:
2658:
2657:
2655:
2654:
2648:
2629:
2627:
2617:
2611:
2610:
2601:
2599:
2598:
2591:
2584:
2576:
2567:
2566:
2564:
2563:
2534:
2526:
2524:= discontinued
2517:
2514:
2513:
2511:
2510:
2505:
2500:
2495:
2490:
2488:David Cheriton
2485:
2479:
2477:
2471:
2470:
2468:
2462:
2456:
2450:
2444:
2442:
2432:
2431:
2429:
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2255:
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2212:
2210:
2209:
2202:
2195:
2187:
2185:
2173:
2172:
2170:
2169:
2166:TI-RTOS Kernel
2163:
2155:
2153:
2147:
2146:
2144:
2143:
2137:
2130:
2122:
2120:
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2052:
2044:
2038:
2031:
2029:
2022:
2021:
2019:
2018:
2017:
2016:
2009:
2002:
1999:Concurrent DOS
1987:
1985:
1979:
1978:
1976:
1975:
1954:
1952:
1946:
1945:
1943:
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1936:
1927:
1925:
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1911:
1905:
1898:
1896:
1892:
1891:
1889:
1888:
1887:
1886:
1881:
1880:(organization)
1878:T-Engine Forum
1875:
1873:Micro T-Kernel
1865:
1859:
1853:
1846:
1845:
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1610:External links
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1135:runtime system
1126:
1123:
1097:
1094:
1093:
1092:
1089:
1086:
1083:
1080:
1077:
1069:
1066:
1055:message queues
1031:
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984:
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885:Giant Gecko S1
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567:Analog Devices
563:
561:
558:
415:
412:
387:
386:
377:
373:
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367:
361:
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355:user interface
349:
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199:Latest release
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15:
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10:
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6:
4:
3:
2:
3763:
3752:
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3726:1997 software
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3685:
3684:
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3648:
3647:Avie Tevanian
3645:
3643:
3640:
3638:
3635:
3633:
3630:
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3625:
3623:
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3618:
3617:Gernot Heiser
3615:
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3208:^ integrates
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2811:
2808:
2806:
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2801:
2796:
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2790:
2789:
2785:
2783:Little Kernel
2782:
2779:
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2774:
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2203:
2201:
2200:
2196:
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2181:
2178:
2174:
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2039:
2036:
2033:
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2030:
2027:
2023:
2015:
2014:
2010:
2008:
2007:
2003:
2001:
2000:
1996:
1995:
1994:
1993:
1992:Multiuser DOS
1989:
1988:
1986:
1984:
1980:
1973:
1972:
1967:
1966:
1961:
1960:
1956:
1955:
1953:
1951:
1947:
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1893:
1885:
1882:
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1864:
1863:ITRON project
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1637:
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1633:
1627:
1624:
1622:
1619:
1617:
1614:
1613:
1609:
1594:on 2022-05-31
1593:
1589:
1588:Own Your Bits
1585:
1578:
1575:
1570:
1566:
1560:
1557:
1545:
1541:
1535:
1532:
1521:on 2018-06-14
1520:
1516:
1512:
1506:
1503:
1498:
1497:Express Logic
1491:
1485:
1482:
1477:
1470:
1463:
1460:
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1445:
1439:
1436:
1431:
1427:
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1401:
1395:
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1316:
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1303:
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1201:
1197:
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1185:
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1173:
1171:
1169:
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1152:
1150:
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1136:
1132:
1124:
1122:
1120:
1115:
1111:
1107:
1103:
1095:
1090:
1087:
1084:
1081:
1078:
1075:
1074:
1073:
1067:
1065:
1063:
1058:
1056:
1052:
1048:
1043:
1041:
1036:
1029:
1027:
1025:
1020:
1017:
1015:
1012:in 2013, and
1011:
1008:
1003:
1000:
997:
994:
991:
988:
982:
974:
971:
968:
967:
966:
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947:
944:
941:
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937:
936:
933:
932:
926:
923:
920:
917:
916:
915:
912:
911:
905:
902:
899:
896:
894:Leopard Gecko
893:
890:
887:
884:
881:
878:
877:
876:
873:
872:
866:
863:
860:
857:
854:
851:
848:
845:
842:
839:
836:
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832:
831:
828:
827:
821:
818:
815:
812:
809:
806:
805:
804:
801:
800:
794:
791:
788:
785:
782:
779:
778:
777:
774:
773:
767:
764:
761:
758:
756:MIPS32 1004Kx
755:
752:
749:
746:
743:
740:
739:
738:
735:
734:
728:
725:
722:
719:
716:
713:
710:
707:
706:
705:
702:
701:
695:
692:
689:
686:
685:
684:
681:
680:
674:
671:
670:
669:
666:
665:
659:
656:
655:
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650:
644:
643:
641:
640:
634:
633:
631:
630:
624:
621:
618:
615:
612:
609:
606:
605:
604:
601:
600:
594:
593:
592:
589:
588:
582:
579:
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573:
570:
569:
568:
565:
564:
559:
557:
555:
551:
547:
543:
538:
536:
533:
529:
525:
520:
518:
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510:
506:
502:
497:
495:
491:
487:
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479:
475:
471:
467:
463:
459:
454:
452:
448:
444:
440:
436:
431:
429:
425:
424:William Lamie
421:
413:
411:
409:
405:
401:
397:
393:
384:
378:
374:
371:
368:
366:
362:
358:
356:
350:
347:
343:
340:
336:
335:deterministic
332:
329:
326:
322:
318:
314:
310:
306:
302:
298:
294:
290:
286:
282:
278:
275:
271:
267:
265:
261:
257:
255:Update method
253:
249:
245:
242:
238:
234:
222:
220:
216:
202:
200:
196:
182:
178:
175:
172:
168:
164:
162:Working state
160:
157:
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148:
144:
139:
134:
132:
128:
113:
110:
102:
99:November 2010
91:
88:
84:
81:
77:
74:
70:
67:
63:
60: –
59:
55:
54:Find sources:
48:
42:
41:
37:
32:This article
30:
26:
21:
20:
3736:Microkernels
3702:
3692:
3680:
3672:
3667:
3664:
3652:William Wulf
3526:
3520:
3514:
3506:
3493:
3443:
3435:
3422:Workplace OS
3420:
3413:
3409:
3402:AIM alliance
3389:
3383:
3307:
3301:
3277:
3270:
3255:
3248:
3217:
3209:
3203:
3197:
3170:
3137:
3122:
3115:
3108:
3095:
3084:
3078:
3072:
3032:Nucleus RTOS
3017:
3000:
2993:
2981:
2962:
2956:
2952:
2946:
2938:
2911:
2904:
2891:
2851:
2832:
2825:
2815:
2802:
2786:
2775:
2767:
2759:
2744:
2725:
2703:
2697:
2677:
2670:
2638:
2632:
2603:Microkernels
2558:
2548:
2536:
2528:
2523:
2520:
2508:Ken Sakamura
2503:Adam Dunkels
2406:
2400:
2393:
2386:
2368:
2361:
2309:
2301:
2281:
2249:
2216:Low resource
2204:
2197:
2190:
2158:
2132:
2125:
2101:
2079:
2078:^° kernel →
2073:
2046:
2011:
2004:
1997:
1990:
1969:
1963:
1957:
1930:
1811:Nucleus RTOS
1796:
1777:
1757:
1732:
1726:
1722:
1716:
1699:
1596:. Retrieved
1592:the original
1587:
1577:
1568:
1559:
1548:. Retrieved
1546:. 2018-01-16
1543:
1534:
1523:. Retrieved
1519:the original
1515:Thread Group
1514:
1505:
1496:
1484:
1475:
1462:
1451:. Retrieved
1448:VDC Research
1447:
1438:
1429:
1419:
1407:. Retrieved
1403:
1394:
1385:
1366:. AspenCore.
1363:
1353:
1342:
1333:
1286:Raspberry Pi
1283:
1265:
1249:
1225:
1211:
1189:
1177:
1174:Embedded USB
1156:
1128:
1119:flash memory
1099:
1085:Embedded USB
1071:
1059:
1044:
1037:
1035:scheduling.
1033:
1021:
1018:
1004:
1001:
998:
995:
992:
989:
986:
903:Wonder Gecko
875:Silicon Labs
645:TeakLite-III
619:ARM Cortex-M
616:ARM Cortex-R
613:ARM Cortex-A
539:
521:
498:
461:
455:
450:
432:
428:Nucleus RTOS
417:
399:
395:
391:
390:
170:Source model
105:
96:
86:
79:
72:
65:
53:
33:
3592:Gordon Bell
3482:OpenComRTOS
3379:Singularity
3205:Chorus/Jazz
3128:OpenHarmony
2607:nanokernels
2531:Microkernel
2493:Dave Cutler
2483:Gordon Bell
2388:Sintran III
2258:OpenComRTOS
1959:Chorus/Jazz
1409:23 November
1294:binary blob
1279:space probe
1276:Deep Impact
1270:, and even
1252:source code
897:Pearl Gecko
888:Happy Gecko
882:Giant Gecko
753:MIPS32 74Kx
750:MIPS32 34Kx
747:MIPS32 24Kx
744:MIPS32 14Kx
546:file system
537:compliant.
464:represents
447:MIT License
439:open source
370:MIT License
342:microkernel
174:Open source
3720:Categories
3584:Developers
3551:Frameworks
3488:Phantom OS
3452:ChibiOS/RT
2810:µ-velOSity
2804:MicroEmpix
2550:Comparison
2475:Developers
2436:Frameworks
2378:° Standard
2356:Phantom OS
2334:µ-velOSity
2223:ChibiOS/RT
1598:2024-03-09
1550:2019-02-13
1525:2018-01-11
1453:2018-07-31
1325:References
1234:(SSL/TLS)
1209:SW-SIL 4.
1047:semaphores
1030:Technology
969:Microblaze
906:Zero Gecko
900:Tiny Gecko
891:Jade Gecko
762:microAptiv
759:interAptiv
741:MIPS32 4Kx
490:picokernel
472:response,
396:Azure RTOS
346:picokernel
303:, RX, SH,
258:Re-install
219:Repository
210:2024-02-28
151:Written in
69:newspapers
36:references
3675:Real-time
3632:Ike Nassi
3607:Dan Dodge
3371:Microsoft
3241:Unix-like
3231:Macintosh
3139:HarmonyOS
3026:Integrity
2925:Minix-vmd
2885:Unix-like
2864:Operating
2662:Macintosh
2498:Dan Dodge
2426:UniProton
2376:RT-Thread
2350:Microware
2270:RT-Thread
2094:Microsoft
1884:T-License
1805:Integrity
1692:Unix-like
1671:Operating
1404:Microsoft
1246:Packaging
1236:libraries
1218:IEC 60335
1214:IEC 60730
1200:ISO 26262
1198:Class C,
1196:IEC 62304
1192:IEC 61508
1091:Packaging
1024:Microsoft
1016:in 2014.
1010:IEC 61508
972:Zynq-7000
704:Microchip
515:(MMU) or
507:(AMP) or
470:interrupt
435:Microsoft
339:real-time
273:Platforms
145:(current)
138:Microsoft
131:Developer
58:"ThreadX"
3458:FreeRTOS
3415:Taligent
3347:Broadway
3341:AspireOS
3211:ChorusOS
3132:Oniro OS
3019:ChorusOS
2899:GNU Hurd
2853:Vanguard
2795:GNU Mach
2679:NuKernel
2560:Category
2382:ScreenOS
2322:FreeRTOS
2264:PX5 RTOS
1971:ChorusOS
1868:T-Kernel
1829:PX5 RTOS
1798:ChorusOS
1707:Junos OS
1364:Embedded
1312:See also
1288:line of
1238:such as
1207:EN 50128
1014:UL 60730
945:Hercules
765:proAptiv
693:Arria 10
668:Infineon
660:eSi-32x0
657:eSi-16x0
653:eSi-RISC
632:Cadence
571:Blackfin
414:Overview
331:Embedded
319:, others
317:Coldfire
231:/threadx
140:(former)
3665:Italics
3574:TI-RTOS
3522:Harmony
3501:SharpOS
3495:RC 4000
3464:HelenOS
3384:ThreadX
3361:MorphOS
3330:AmigaOS
3309:Symbian
3286:kernel)
3284:PowerPC
3272:Copland
3257:MacMach
3250:MachTen
3011:Partial
2957:Unix-RT
2940:MkLinux
2931:Minix 3
2877:support
2866:systems
2840:RTLinux
2834:PowerUP
2817:nucleus
2615:Kernels
2521:Italics
2465:Xenomai
2459:TI-RTOS
2421:VxWorks
2408:Harmony
2311:DioneOS
2282:ThreadX
2251:Nano-RK
2240:FunkOS°
2229:Contiki
2134:4690 OS
2127:4680 OS
2102:ThreadX
2081:Symbian
2013:REAL/32
1895:Partial
1852:support
1825:^ (OSE)
1790:Partial
1752:RTLinux
1727:Unix-RT
1684:support
1673:systems
1544:wolfSSL
1430:Renesas
1302:booting
1296:on the
1240:wolfSSL
1222:UL 1998
1194:SIL 4,
1147:WYSIWYG
1051:mutexes
983:History
921:ARC 700
918:ARC 600
867:STM32WB
864:STM32U5
861:STM32U0
855:STM32H7
852:STM32H5
849:STM32F7
846:STM32F4
843:STM32F3
840:STM32F2
837:STM32F1
834:STM32F0
819:Synergy
807:H8/300H
803:Renesas
792:PowerPC
786:Kinetis
768:M-Class
720:SAM C-V
714:dsPIC33
690:Cyclone
687:Nios II
675:XMC4000
672:XMC1000
535:MISRA C
458:threads
400:ThreadX
381:threadx
365:License
353:Default
297:PowerPC
208: (
188: (
165:Current
83:scholar
3568:Genode
3562:Cosmos
3540:Zephyr
3445:BeRTOS
3437:Amoeba
3233:hosted
3199:JavaOS
3179:Wombat
3172:REX OS
3165:PikeOS
3159:LLinux
3152:kernel
3110:Midori
3091:CapROS
3080:KeyKOS
3074:GNOSIS
2995:UNICOS
2983:Spring
2964:OS2000
2913:MeikOS
2746:WarpOS
2733:ExecSG
2664:hosted
2626:family
2303:BeRTOS
2288:Zephyr
2272:° Nano
2244:Mynewt
2206:VAXELN
2192:RSX-11
2180:PDP-11
2055:Wombat
2048:REX OS
2041:PikeOS
2035:LLinux
2028:kernel
2006:FlexOS
1965:JavaOS
1779:LiteOS
1770:LiteOS
1734:OS2000
1712:LynxOS
1664:(RTOS)
1386:Forbes
1344:GitHub
1228:DO-178
1205:, and
1203:ASIL D
1168:Thread
1112:, and
965:Xilinx
957:Tiva-C
954:Sitara
948:MSP430
927:ARC HS
924:ARC EM
858:STM32L
635:Xtensa
595:RISC-V
325:Kernel
301:RISC-V
225:github
85:
78:
71:
64:
56:
3516:Thoth
3470:µC/OS
3391:Verve
3323:-type
3321:Amiga
3295:Psion
3117:NLTSS
3097:Hydra
3038:NuttX
2989:Tinix
2976:Redox
2919:Minix
2906:Lites
2875:POSIX
2761:ADEOS
2740:Quark
2719:-type
2717:Amiga
2690:Psion
2634:Eumel
2402:Thoth
2395:THEOS
2328:µC/OS
2317:embOS
2199:RT-11
2142:(TPF)
2066:Psion
1908:RTEMS
1817:NuttX
1682:POSIX
1493:(PDF)
1472:(PDF)
1306:Linux
1216:, UL/
1114:exFAT
1102:FAT12
942:C64x+
939:C674x
879:Gecko
729:SAMA5
717:PIC32
711:PIC24
708:AVR32
683:Intel
642:CEVA
591:Andes
580:SHARC
574:CM4xx
305:SHARC
90:JSTOR
76:books
3681:° =
3673:^ =
3555:kits
3534:VRTX
3525:^ →
3519:^ →
3508:SPIN
3410:Pink
3335:AROS
3303:EPOC
3103:seL4
3086:EROS
3050:RIOT
3002:VSTa
2953:MERT
2827:Opus
2788:Mach
2769:EROS
2727:Exec
2705:EKA2
2699:EKA1
2651:OKL4
2537:° =
2529:^ =
2453:RTAI
2440:kits
2415:VRTX
2405:^ →
2363:pSOS
2346:OS-9
2276:RIOT
2160:DSOS
2075:EKA2
1939:seL4
1932:EROS
1902:eCos
1850:TRON
1835:RIOT
1759:UNOS
1723:MERT
1701:DNIX
1411:2023
1320:(ME)
1284:The
1272:NASA
1163:IPv6
1161:and
1159:IPv4
822:V850
783:i.MX
737:MIPS
726:SAM9
723:SAM7
610:ARM9
607:ARM7
398:and
327:type
285:MIPS
268:None
227:.com
190:1997
183:1997
62:news
3476:MQX
3044:OSE
2970:QNX
2951:^ (
2893:ARX
2777:K42
2449:° 2
2370:RMX
2340:MQX
2183:VAX
2177:DEC
2118:IBM
1983:DOS
1962:^ (
1740:QNX
1721:^ (
1274:’s
1180:USB
1007:TÜV
914:ARC
795:S32
789:LPC
776:NXP
696:x86
603:ARM
554:USB
383:.io
313:x86
293:PIC
289:NXP
281:ARM
277:ARC
248:IoT
38:to
3722::
3576:^°
3553:,
3542:^°
3490:^°
3472:^°
3460:^°
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3417:OS
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2225:^°
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2037:^°
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1968:+
1941:^°
1935:^°
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