Real-time operating system for microcontrollers
Developed in partnership with the world’s leading chip companies over a 15-year period, and now downloaded every 170 seconds, FreeRTOS is a market-leading real-time operating system (RTOS) for microcontrollers and small microprocessors. Distributed freely under the MIT open source license, FreeRTOS includes a kernel and a growing set of IoT libraries suitable for use across all industry sectors. FreeRTOS is built with an emphasis on reliability and ease of use.
With proven robustness, tiny footprint, and wide device support, the FreeRTOS kernel is trusted by world-leading companies as the de facto standard for microcontrollers and small microprocessors.
Accelerate time to market
With detailed pre-configured demos and Internet of Things (IoT) reference integrations, there is no need to determine how to setup a project. Quickly download, compile, and get to market faster.
Broad ecosystem support
Our partner ecosystem provides a breadth of options including community contributions, professional support, as well as integrated IDE and productivity tools.
Predictability of long term support
FreeRTOS offers feature stability with long term support (LTS) releases. FreeRTOS LTS libraries come with security updates and critical bug fixes for two years. Maintained by AWS for the benefit of the FreeRTOS community.
Tiny, power-saving kernel
Scalable size, with usable program memory footprint as low as 9KB. Some architectures include a tick-less power saving mode
Support for 40+ architectures
One code base for 40+ MCU architectures and 15+ toolchains, including the latest RISC-V and ARMv8-M (Arm Cortex-M33) microcontrollers
A growing number of add-on libraries used across all industry sectors, including secure local or cloud connectivity
AWS Reference Integrations
Take advantage of tested examples that include all the libraries essential to securely connect to the cloud
- FreeRTOS 202104.00 includes new managed OTA and MQTT capabilities for IoT applications
FreeRTOS version 202104.00 includes managed AWS IoT Over-the-Air update (OTA) and coreMQTT Agent libraries, and the AWS IoT Device Defender custom metrics feature. Developers can use these libraries to remotely update IoT device firmware, manage IoT device fleets, and monitor IoT device fleet metrics. These libraries have been optimized for modularity and memory usage for […]Read more…
- Why Write Another MQTT Library?
Libraries capture a set of decisions about how the world should work. If you're lucky, the model in the library is a suitable match for your needs and constraints. If you're not lucky, you either end up with something that's wasteful, or requires changes, or you must search for a different library that's a better […]Read more…
- FreeRTOS Long Term Support now includes AWS IoT over-the-air update, AWS IoT Device Defender, and AWS IoT Jobs libraries
FreeRTOS Long Term Support (LTS) release 202012.01 now includes the over-the-air update (OTA), AWS IoT Device Defender, and AWS IoT Jobs libraries in the first LTS release (FreeRTOS 202012.00 LTS). With this release, developers can use the FreeRTOS LTS libraries to update firmware, manage device fleets, and monitor fleet metrics for their microcontroller-based IoT devices. […]Read more…
- Why SESIP™ Certification for FreeRTOS Matters
FreeRTOS is now certified for the Security Evaluation Standard for IoT Platforms (SESIP™) Assurance Level 2. FreeRTOS is software that, in most cases, runs on embedded system processors. More than ever, developers are building FreeRTOS applications while participating in a growing community that has been working together for more than 18 years. Although the primary […]Read more…
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