Select your cookie preferences

We use essential cookies and similar tools that are necessary to provide our site and services. We use performance cookies to collect anonymous statistics, so we can understand how customers use our site and make improvements. Essential cookies cannot be deactivated, but you can choose “Customize” or “Decline” to decline performance cookies.

If you agree, AWS and approved third parties will also use cookies to provide useful site features, remember your preferences, and display relevant content, including relevant advertising. To accept or decline all non-essential cookies, choose “Accept” or “Decline.” To make more detailed choices, choose “Customize.”

Updated Apr 2025

The FreeRTOS™ Kernel

Market leadingexternal_link, de facto standard, and cross platform RTOS kernel

Developed in partnership with the world's leading chip companies over a 18 year period, FreeRTOS is a market-leading real-time operating system for microcontrollers and small microprocessors. 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. With one download every 170 seconds, FreeRTOS is built with an emphasis on reliability, accessibility, and ease of use.  

For additional information see: