Amazon FreeRTOS Alternatives (January 2026)

VxWorks is a high-performance real-time operating system (RTOS) for the development of robust mission-critical embedded systems for the intelligent edge.

Mbed OS is the fastest way to build IoT products with Arm processors

Amazon Corretto is a no-cost, multiplatform, production-ready distribution of the Open Java Development Kit (OpenJDK). Corretto comes with no-cost long-term support. Amazon runs Corretto internally on thousands of production services and Corretto is certified as compatible with the Java SE standard.

Red Hat Enterprise Linux is a stable, proven foundation that’s versatile enough for rolling out new applications, virtualizing environments, and creating a more secure hybrid cloud.

AWS IoT Greengrass is an open-source edge runtime and cloud service that helps you build, deploy, and manage intelligent device software.

AWS IoT lets you securely connect and manage devices, collect and analyze device data, and build and deploy solutions that drive greater business value.

AWS Cloud Development Kit (CDK) is an open-source software development framework used to model and provision your cloud application resources with familiar programming languages.

Amazon Timestream is a fast, scalable, serverless time series database service for Internet of Things (IoT) and operational applications that helps you store and analyze time series data.

Timesys offers Linux, Android, and open source operating systems software security, engineering services, and development tools, for embedded software market