DeveloperBernard Xiong & RT-Thread Team
Written inC
Working stateCurrent
Source modelOpen source
Initial release2006
Latest release4.0.3 / December 31, 2020; 10 months ago (2020-12-31)
  • github.com/RT-Thread/rt-thread Edit this at Wikidata
Marketing targetEmbedded devices, IoT
PlatformsARM (Cortex-M0, Cortex-M3, Cortex-M4, Cortex-M7, Cortex-M23, Cortex-R4, Cortex-A8, Cortex-A9, ARM7, ARM9, ARM11), MIPS32, RISC-V, ARC, DSP, C-Sky, x86
Kernel typeSingle Kernel
LicenseApache 2.0
Official websitert-thread.org

RT-Thread is an open-source real-time operating system (RTOS) for Embedded devices and Internet of things (IoT).[1][2] It is developed by the RT-Thread Development Team based in China. RT-Thread is aimed to change the current situation in China that there is no well used open-source real-time operating system in the microcontroller area.

As of August 2020, RT-Thread was reported to be #3 on the list of RTOSes with the largest number of contributors (behind Zephyr and mbed OS).[3]


RT-Thread was started in 2006 as an open-source real-time operating system (RTOS) that is mainly written in C language. There are two types of RT-Thread: Standard and Nano. For resource-constrained microcontrollers, RT-Thread Nano was released in 2017 and requires a minimum of 3KB Flash/ROM and 1.2KB RAM.[1][2]

See also


  1. ^ a b "RT-Thread 启动下一代RTOS演化".
  2. ^ a b "RT-Thread github".
  3. ^ "Introduction to the Zephyr RTOS". Nordic Semiconductor. October 6, 2020.

External links

  • RT-Thread Official Homepage(Chinese)
  • RT-Thread GitHub homepage
  • gitee repository