2025-04-09
FreeRTOS is an open-source real-time operating system (RTOS) designed specifically for embedded systems, particularly resource-constrained microcontrollers (MCUs). FreeRTOS is the top choice for ARM Cortex-M microcontrollers due to its lightweight, free, and portable nature, making it ideal for cost-sensitive and rapid-development projects. For scenarios requiring stronger security or Linux compatibility, consider Zephyr or Azure RTOS (ThreadX).