• Zephyr
  • A Small, Scalable, Open Source RTOS for IoT Embedded Devices

    Find Out More

What is Zephyr Project?

The Zephyr™ Project is a scalable real-time operating system (RTOS) supporting multiple hardware architectures, optimized for resource constrained devices, and built with security in mind. This Linux Foundation hosted project embraces open source development values and governance on its mission to unite leaders from across the industry to produce a best-in-breed solution.

At Its Core


  • Developed with security in mind.
  • Deliver security features for resource constrained devices

Open Source

  • Neutrally governed
  • Established and proven development model
  • Permissively licensed


  • Connectivity protocols optimized for resource constrained devices
  • Developers can customize for their device needs

What's New

October 20, 2017

Zephyr Project Brings IoT Expertise to the Embedded Linux Conference Europe

The Adoption of IoT (Internet of Things) technology has grown at an enormous pace. Forbes.com has reported that spending on IoT will increase to $267 billion by the year 2020, indicating how important that the technology will become to businesses around the world. Nevertheless, IoT is not without its challenges. These include security, connectivity, and choosing the right OS best suited to address those issues.
October 11, 2017

Insider Advice on Getting Your Pull Request Accepted to the Zephyr Project

There are a lot of benefits to being a Zephyr Project contributor. You’ll have the opportunity to improve your existing skill sets, find mentors, teach others, work with like-minded individuals, create public artifacts, build a reputation, and even learn some people skills in the mix.