A Small, Scalable Open Source RTOS for IoT Embedded Devices

The Zephyr™ Project is a scalable real-time operating system (RTOS) supporting multiple hardware architectures, optimized for resource constrained devices, and built with safety and security in mind.
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Complete flexibility & freedom of choice

Open source & neutral governance

Supports multiple hardware architectures

Scales from small cortex-m devices to multi core 64-bit CPUs

Connect small footprint IoT devices securely to any cloud

Multi protocol options including BLE mesh and thread

Supporting industrial, automotive, smart city and smart home

Cloud agnostic – Connect with transport layer security to any cloud

Develop products with safety built in

Long term support

In-depth security development lifecycle

Functional safety certification coming soon

What's New


Antmicro’s work with Time Sensitive Networking support in the Zephyr RTOS

| Blog | No Comments
This blog originally ran on the Antmicro website. For more Zephyr development tips and articles, please visit their blog. Solving problems that require real-time calculations and precise control typically calls for…

The Zephyr Project Welcomes Eclipse IoT and Oticon As Members to Create a Safe and Secure RTOS

| Announcements | No Comments
The Zephyr Community also announces the Release of 2.0.0 and Developer Boards Now Shipping with ZephyrOS SAN FRANCISCO–  Oct. 8, 2019 – The Zephyr™ Project, an open source project at…


Feb 25

Embedded World

February 25, 2020 - February 27, 2020

Find out more about Zephyr Project

Videos, presentations, demos, and more

Read the project documentation

Pull Requests Closed

As of Release 2.0.0 (September 2019)

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