FreeRTOS is an open-source, real-time operating system (RTOS) kernel designed for embedded devices and microcontrollers. It provides essential multitasking capabilities, including task scheduling, inter-task communication, and memory management, enabling developers to build responsive and deterministic applications. FreeRTOS supports over 40 architectures, such as ARM Cortex-M, RISC-V, and x86, and is widely used in various industries, including automotive, industrial automation, and consumer electronics.