OpenThread

OpenThread released by Google is an open-source implementation of Thread®. Google has released OpenThread to make the networking technology used in Google Nest products more broadly available to developers, in order to accelerate the development of products for the connected home.

With a narrow platform abstraction layer and a small memory footprint, OpenThread is highly portable. It supports both system-on-chip (SoC) and network co-processor (NCP) designs.

Thread Certified component

OpenThread implements all features defined in the Thread 1.1.1 Specification. This specification defines an IPv6-based reliable, secure, and low-power wireless device-to-device communication protocol for home applications.

Features

OpenThread implements all Thread networking layers (IPv6, 6LoWPAN, IEEE 802.15.4 with MAC security, Mesh Link Establishment, Mesh Routing) and device roles, as well as Border Router support.

Application services
  • IPv6 configuration and raw data interface
  • UDP sockets
  • CoAP client and server
  • DHCPv6 client and server
  • DNSv6 client
Enhanced Features
  • Child Supervision
  • Inform Previous Parent on Reattach
  • Jam Detection
  • Periodic Parent Search
NCP support
  • Spinel, a general purpose NCP protocol
  • wpantund, a user-space NCP network interface driver/daemon
  • Sniffer support via NCP Spinel nodes
Border Router
  • Web UI for configuration and management
  • Thread Border Agent to support an External Commissioner
  • NAT64 for connecting to IPv4 networks
  • Thread interface driver using wpantund

How will you use OpenThread?

If you're interested in contributing to the ongoing development of OpenThread, then the OpenThread GitHub repository is for you. There you will find all the code, including information on how to contribute, our style guide, code of conduct, licensing, and much more.

If you want to use OpenThread in your own products or for personal deployment, check the options below.

Deploy a Thread network

Determine the hardware and platform design you wish to use to build and deploy your own Thread network. Add a Border Router to connect your Thread network to other network layers, such as Wi-Fi or Ethernet, or use OpenThread RTOS, a single platform solution using LwIP, FreeRTOS, and mbed TLS.

Develop applications on top of a Thread network

Try out our API Codelab and use our API Reference as a guide to application development. IPv6, UDP, CoAP, ICMPv6, DNSv6...it's all there.

Port OpenThread to a new hardware platform

Check out our Porting Guide, which walks you through all the steps necessary to port OpenThread to a new hardware platform.

Get Thread Certification for your OpenThread product

OpenThread can be used for certification by the Thread Group. As a Thread reference stack, OpenThread makes certification easy.

News

Google Nest Hub Max is Thread Certified!

Sep 9, 2019

In a major milestone for Thread, the Google Nest Hub Max has been Thread Certified and has become the world's first publicly-available "Built on Thread" device.

Samsung's Exynos i T100 is Thread Certified with OpenThread

Jun 21, 2019

The Samsung Exynos i T100 is an IoT connectivity solution for short-range communication through supporting major protocols including Bluetooth 5 Low Energy, Zigbee 3.0 and Thread.

Cloud IoT Core Codelab added

May 15, 2019

We've added a new Codelab, Integrating Thread Devices with Cloud IoT Core. Using Docker, Cloud IoT Core and Pub/Sub, learn how to connect a simulated OT RTOS device to a Cloud MQTT server.

Who supports OpenThread?

Start using OpenThread today

Java is a registered trademark of Oracle and/or its affiliates. Thread is a registered trademark of the Thread Group, Inc.