A Tiny and Elegant IoT Operating System

  • Open Source
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  • Community-based
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  • Neutral Platform









Why RT-Thread?

Rich Components

Device virtual file system
Supports FAT, UFFS, NFSv3, ROMFS, RAMFS, etc.
Device management framework
Uses a unified interface to access the hardware peripherals.
Low power management framework
The system can go to sleep mode automatically, and supports dynamic voltage and frequency scaling.
Hardware encryption &decryption framework
Supports algorithms such as hash, symmetric, gcm, etc.
Protocol stack
Supports Ethernet, Wi-Fi, Bluetooth, NB-IoT, 2G | 3G | 4G, Http, MQTT, and LwM2M, etc.
Remote upgrade FOTA
Safe and reliable, and which supports encryption, anti-tampering, breakpoint resume, intelligent restoration, backtracking and other mechanisms.
Dynamic modules
The dynamic modules and the kernel can be compiled separately, and at runtime, the compiled dynamic modules are loaded into the kernel to run.
Third-party components
Support Yaffs2, Sqlite, FreeModbus, Canopen, etc.

Great Portability & Software Ecology

Supports mainstream chip architecture
Such as ARM Cortex-M, MIPS, X86, Xtensa, C-Sky, RISC-V, ARC, etc.
Unified interface specification
Various MCUs and their peripheral interfaces are highly abstracted and the programming interfaces are unified.
POSIX interface
Easy to port Linux or Unix programs to RT-Thread. Support for File I/O, Signals, PThreads, IPC, etc.
Seamless application migration
Follows highly reusable software design principles, one-time programming, permanent use.
Multiple compiling tools
Such as Keil, IAR, GCC, Eclipse, Visual Studio and RT-Thread Studio development environment, etc.
Rich BSPs and porting templates
Lots of BSPs as well as porting templates that can be quickly ported to the target chip based on the porting template.

Tiny & Elegant

Small in Size
RT-Thread has a Nano version with a very small size and refined hard real-time kernel, which requires only 3KB of ROM and 1.2 KB of RAM.
RT-Thread has rich features, such as, hard real-time scheduler, thread management, interthread synchronization and communication, clock management, interrupt management, memory management, etc.

RT-Thread Studio

RT-Thread studio is one-stop development tool, it has easy-to-use graphical configuration system and a wealth of software packages and components resources, which makes IoT development simple and efficient.

  • Community version is free forever.
  • Easy-to-use engineering creation wizard can quickly validate prototypes.
  • Brand new graphical configuration system, which supports both schema diagram and tree diagram configuration.
  • Software package market offers a variety of package resources.

Latest News


News | Feb.21.2020
RT-Thread IoT OS Hopes to Get Connect with Global Developers:
Alan Kay said: “Simple things should be simple, complex things should be possible”. This sentence was the inspiration for the founder of RT-Thread to stick to his beliefs. RT-Thread was born in 2006, it is an open source, neutral, and community-based real-time operating system (RTOS).


Blog | Aug.11.2020
How to Port the Kernel to Your Hardware Platform?
Kernel porting refers to the kernel running on different chip architectures and boards. It can have functions such as thread management and scheduling, memory management, inter-thread synchronization and communication, and timer management, etc. Porting can be divided into two parts: CPU architecture porting and BSP (Board support package) porting.


Announcement | Sep.24.2020
RT-Thread Smart OpenSource Micro-Kernel Operating System is Launching:
With a lot of market research and 2 years of Hard Work Development, the RT-Thread Research & Development Team successfully developed the RT-Thread Smart Micro-Kernel Operating System. RT-Thread Smart is aimed primarily at mid- to high-end processors with MMU(Memory Management Unit), providing a more competitive operating system-based software platform for different industries.

RT-Thread Supported Chips & Boards

  • stm32f407-st-discovery
  • stm32f411-st-nucleo
  • stm32f429-st-disco
  • stm32f469-st-disco
  • stm32h743-st-nucleo
  • psoc6-pioneerkit_modus
  • frdm-k64f
  • gd32vf103v-eval
  • hifive1
  • imxrt1052-nxp-evk
  • lpc54608-LPCXpresso
  • lpc55sxx
  • raspi2
  • rv32m1_vega
  • stm32f427-robomaster-a
  • stm32l475-atk-pandora
  • ST Micro STM32 Nucleo-64
  • ST Micro STM32F4 Discovery
  • ST Micro STM32F7 Discovery
  • OpenISA VEGAboard

Have interests about RT-Thread? Let's get in touch!

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