Updated Apr 2025
The FreeRTOS™ Kernel
Market leading,
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:
- What is FreeRTOS for an RTOS primer,
- RTOS Fundamentals for a deeper dive,
- Why Choose FreeRTOS to read more about the FreeRTOS value proposition.