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Ready for an open source IoT platform that transforms IoT development?


Legato® Open Source Software

Legato® is the Semtech (formerly Sierra Wireless) Linux-based application framework that enables you to deploy secure applications and maintain Linux distribution in a feature-rich development environment. Released in open source, Legato future-proofs your software investments with the option to port the entire stack and applications over to any application processor. The robust Legato APIs let you connect to any cloud or network, enabling you to focus on building the value-added applications that improve your solution.

Save development time with Legato pre-integrated, tested, and validated inside the application processors of our WP Series modules and FX30 programmable gateways.

OEM-Legato-Application Framework Diagram
Customization icon

Application Framework:
Designed with security and connectivity

  • Application Sandbox – secure environment to run and control multiple applications
  • Secure Storage – encrypted storage area to store sensitive application data
  • ARM TrustZone based IoT Keystore – hardware-accelerated IoT keystore that provides key generation (public, private and symmetric) and cryptographic APIs
  • Robust Connectivity APIs – access to cloud and network services such as voice calls, SMS, data and radio controls
  • Customizable middleware components – components for selection of building blocks such as configuration, database, resource arbitration and secure IPC

Easy integration icon

Linux Distribution:
Customizable with built-in IoT features

  • Free open source packages – validated by the Linux Foundation, including BusyBox, OpenSSL, DHCP, PPP, and OpenSSH
  • Long-term supported Linux kernel (LTSI) – hosted by the Linux Foundation and maintained by the embedded systems industry
  • Board support package (BSP) – validated on our WP Series modules to enable hardware interfaces and power management

Programming icon

Development Environment:
Simplifies application-level development

  • Leaf and Github – simple tools to setup Legato build environment in just a few commands
  • VS Code based IDE – lightweight and easy-to-use plugin with built-in API documentation for one of the most popular development IDE’s
  • Command Line – interface to automate builds and integrate into any tool chain
  • Robust diagnostic – tools for local and remote debugging, troubleshooting, monitoring and profiling
  • Yocto build tools – build tools to rebuild and tailor the Linux distribution for any project

Our Devices with Legato®

WP Series White Modules Legato

WP Series IoT Modules

Embedded IoT modules that come with a Cortex-A processor running the Legato® application framework to connect your devices globally.


FX30 Programmable IoT Gateway

IoT gateways that are the industry’s smallest, most rugged and secure. Easily integrate wireless connectivity and add intelligence at the edge to collect valuable IoT data for any connected machine or infrastructure.

Learn more about Legato®

Legato Application Overview

Introducing the Legato platform, an open source application platform built on Linux designed to simplify IoT development. Legato is ready-to-run, build, and connect out-of-the-box

Legato for Industrial Automation

The Legato platform enables industrial IoT builders to develop new connected services and monitoring applications.

How to Buy

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Sierra Wireless is now Semtech