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


Co-simulating HDL models in Renode with Verilator running on Zephyr RTOS

| Blog | No Comments
This blog originally ran on the Antmicro website. For more Zephyr development tips and articles, please visit their blog. Antmicro’s open source simulation framework, Renode, was built to enable simulating real-life…

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…


Mon 28

Embedded Linux Conference Europe

October 28, 2019 - October 30, 2019

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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