Amazon FreeRTOS

Where Linux kernel is too big, here is a new free option.
Amazon purchased company and made this 14 years proven OS switch to permissive MIT license, and extended with tools for connecting directly to AWS cloud services.

Amazon FreeRTOS

FreeRTOS - Market leading RTOS (Real Time Operating System) for embedded systems with Internet of Things extensions

AWS IoT Core (If an Amazon FreeRTOS device is connected to the AWS IoT Core)

AWS IoT Device Management (If an Amazon FreeRTOS device receives code-signed updates)

AWS Greengrass (If an Amazon FreeRTOS device is connected to AWS Greengrass Core)

Data transfer (If an Amazon FreeRTOS device initiates external data transfers to AWS, they will be charged at the EC2 data transfer rate)

Amazon S3 (If an Amazon FreeRTOS device uses S3 for storage, requests, and data transfer)

Amazon DynamoDB (If an Amazon FreeRTOS device uses DynamoDB for data storage, throughput capacity, and data transfer)


Amazon FreeRTOS is a new operating system for microcontroller-based IoT devices | TechCrunch