Why use FreeRTOS
Distributed freely under the MIT open source license, FreeRTOS includes a kernel and a growing set of libraries suitable for use across all industry sectors. FreeRTOS is built with an emphasis on reliability and ease of use.
FreeRTOS™
Real-time operating system for microcontrollers and small microprocessors
FreeRTOS is a market-leading embedded system RTOS supporting 40+ processor architectures with a small memory footprint, fast execution times, and cutting-edge RTOS features and libraries including Symmetric Multiprocessing (SMP), a thread-safe TCP stack with IPv6 support, and seamless integration with cloud services. It’s open-source and actively supported and maintained.
What's new
FreeRTOS website now available in Simplified Chinese
Over the years, more and more FreeRTOS users, including customers and partners, have been visiting the FreeRTOS website from the Greater China region. We are excited to announce Simplified Chinese language support for the FreeRTOS website, enabling customers from the Greater China region to easily search and browse content in their preferred language. With...
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New FreeRTOS Long Term Support version released
It has already been 18 months since we introduced FreeRTOS Long Term Support (LTS). With FreeRTOS LTS, developers can rely on a FreeRTOS version that provides feature stability, and security patches and critical bug fixes for two years from the release date. We released the first LTS version (FreeRTOS 202012 LTS) with all libraries needed...
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FreeRTOS Extended Maintenance Plan registration now open
We are excited to announce that registration for the FreeRTOS Extended Maintenance Plan (EMP) is now open. FreeRTOS EMP subscriptions allow embedded developers to receive critical bug fixes and security patches on their chosen FreeRTOS Long Term Support (LTS) version for up to 10 years beyond the end of its initial support period. During the...
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Trusted kernel
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
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.
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
Broad partnership
Our partner ecosystem provides a breadth of options including community contributions, professional support, as well as integrated IDE and productivity tools.
Open source
Open source for 20 years, FreeRTOS can be used for any purpose under its MIT license. Our strategic partner also provides commercial licenses, and safety certification.
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.
Partners
FreeRTOS partners with companies and organizations providing Instruction Set Architectures (ISA) and Intellectual Property (IP) to semiconductor firms. FreeRTOS Kernel Ports align with architectures to provide broad ecosystem support.
FreeRTOS community
Stay on top of the new releases, features, and events
Richard Barry • Sep 15, 2023Refactoring FreeRTOS for the next 20 years
In this talk, we will explore the next 20 years with Amazon's involvement, including the technical roadmap, today's design, and distribution philosophy.
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Richard Barry • Mar 23, 2021Using future-proofed Microcontroller Designs with FreeRTOS
In this session, discover how to overcome challenges in development acceleration while ensuring firmware integrity and longevity, how that ties into Long Term Support releases, and what that means for an open source project in development for more than 15 years.
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Dedicated team support
With our team of experts by your side, you'll never have to go it alone on your journey to success. Our team is dedicated to providing you with the support, guidance, and resources you need to achieve your goals, no matter how big or small. From one-on-one coaching and personalized advice, to access to a community of like-minded individuals, we've got you covered.