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


How to get and compile a Zephyr firmware

| Blog | No Comments
Written by FIT IOT-LAB Description: Zephyr is a real-time operating system designed for the Internet of Things (IoT). The aim of this tutorial is to understand how to setup your environment…

The Zephyr Project Announces Major Technical Milestone with New Long Term Support Code Release

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Core Infrastructure Initiative (CII) awards Zephyr with Gold Best Practice Badge for driving security, quality and stability of open source software SAN FRANCISCO – April 17, 2019 – The Zephyr™…


Wed 21

Open Source Summit North America

August 21, 2019 - August 23, 2019

Find out more about Zephyr Project

Videos, presentations, demos, and more

Read the project documentation

Pull Requests Closed

As of Release 1.14.0 (April 2019)

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