This includes securely connecting your small, low-power devices to AWS Cloud services like AWS IoT Core or to more powerful edge devices running AWS IoT Greengrass. Distributed freely under the MIT open source license, FreeRTOS includes a kernel and a growing set of software libraries suitable for use across industry sectors and applications. FreeRTOS is an open source, real-time operating system for microcontrollers that makes small, low-power edge devices easy to program, deploy, secure, connect, and manage.