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 | Jul.7.2020
Industrial Control Application: A RT-Thread-based Runtime Core for Programmable Logic Controller (PLC)
Introduction:plccore is a RT-Thread-based runtime core for programmable logic controller (PLC), together with the upper computer programming software plcide that I developed, forms a complete PLC development system. With RT-Thread's extensive board support packages (BSP), plccore can be quickly ported to more MCUs, which saves a lot of development time. For MCU developers, the combination of plcide, plccore and rt-thread provides a graphical, tabular way to develop MCU control programs, which is very convenient and simple.


Announcement | Jun.3.2020
RT-Thread Studio IDE V1.1 is Released with 7 New Features:
RT-Thread Studio is a one-stop development tool that has an easy-to-use graphical configuration system and a wealth of software packages and components resources, which is built to make the IoT development more simple and efficient. RT-Thread Studio has the features of project creation and management, code editing, SDK management, RT-Thread configuration, build configuration, debugging configuration, program download and debug.

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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