RIOT in a nutshell

Welcome to the friendly Operating System for the Internet of Things.

RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things (IoT) devices and other embedded devices. These requirements include a very low memory footprint (on the order of a few kilobytes), high energy efficiency, real-time capabilities, support for a wide range of low-power hardware, communication stacks for wireless and communication stacks for wired networks.

RIOT provides threading, multiple network stacks, and utilities which include cryptographic libraries, data structures (bloom filters, hash tables, priority queues), a shell and more. RIOT supports a wide range of microcontroller architectures, radio drivers, sensors, and configurations for entire platforms, e.g. Atmel SAM R21 Xplained Pro, Zolertia Z1, STM32 Discovery Boards etc. (see the list of supported boards. Across all supported hardware (32-bit, 16-bit, and 8-bit platforms), RIOT provides a consistent API and enables C and C++ application programming, with multithreading, IPC, system timers, mutexes etc.

A good high-level overview can be found in the article RIOT: An Open Source Operating System for Low-End Embedded Devices in the IoT (IEEE Internet of Things Journal, December 2018).

Contribute to RIOT

RIOT is developed by an open community that anyone is welcome to join:

Download and contribute your code on GitHub. You can read about how to contribute in our contributing document.
Sign-up to our forum to ask for help using RIOT or writing an application for RIOT, discuss kernel and network stack development as well as hardware support, or to show-case your latest project.
Follow us on Mastodon for news from the RIOT community.
Regarding critical vulnerabilities we would appreciate if you give us a 90-days head-start by reporting to security@riot-os.org, before making your information publicly available
Contact us on Matrix for live support and discussions: riot-os:matrix.org