Silicon Labs
  • ⟵ Back
    Products
    On-Demand
    Experience every keynote, fireside chat, and technical IoT training session from this year’s premier IoT conference
    WirelessWireless
    Amazon Sidewalk
    Bluetooth
    LPWAN
    Matter
    Multiprotocol
    Proprietary
    Thread
    Wi-Fi
    Wi-SUN
    Z-Wave
    Zigbee
    Non-WirelessNon-Wireless
    MCUs
    Power Management
    Sensors
    USB Bridges
    IoT TechnologiesIoT Technologies
    Channel Sounding
    Energy Harvesting
    Machine Learning
    Security
    ServicesServices
    Custom Part Manufacturing
    Developer Services
    SDK Extended Maintenance Service
  • ⟵ Back
    Applications
    Smart HomeSmart Home
    Appliances
    Connected Outdoor
    Entertainment Devices
    IoT Gateways
    LED Lighting
    Security Cameras
    Sensors
    Smart Locks
    Switches
    Industrial IoTIndustrial IoT
    Access Control
    Asset Tracking
    Battery-Powered Tools
    Circuit Breakers
    Commercial Lighting
    Electric Submetering
    Emergency Lighting
    Factory Automation
    Human Machine Interface
    Industrial Wearables
    Predictive Maintenance
    Process Automation
    Smart HVAC
    Smart CitiesSmart Cities
    Battery Storage
    EV Charging Stations
    Smart Agriculture
    Smart Buildings
    Smart Metering
    Smart Solar PV System
    Street Lighting
    Smart RetailSmart Retail
    Commercial Lighting
    Direction Finding
    Electronic Shelf Labels
    Loss Prevention
    Wi-Fi Access Points
    Connected HealthConnected Health
    Portable Medical Devices
    Smart Hospitals
    Smart Wearable Devices
  • ⟵ Back
    Software & Tools
    Simplicity Studio 6
    Fast track IoT development
    Software & ToolsSoftware & Tools
    Simplicity AI SDK
    Software Development Kits (SDKs)
    SDK Release Notes
    Software Reference Documentation
    Software Development Tools
    Hardware Development Tools
    Hardware Documentation
    GitHub Resources
    Developer JourneysDeveloper Journeys
    AI/ML
    Amazon Sidewalk
    Bluetooth
    Bluetooth Mesh
    Google Home
    Matter
    Wi-Fi
    ServicesServices
    Custom Part Manufacturing
    Developer Services
    SDK Extended Maintenance Service
  • ⟵ Back
    Resources
    DocumentationDocumentation
    Blog
    Case Studies
    Software Documentation
    Technical Library
    Whitepapers
    TrainingTraining
    Works With On-Demand 2025
    Tech Talks 2025 On-Demand
    Webinars
    Curriculum
    PartnersPartners
    Channel & Distribution
    Ecosystem Partners
    Partner Network
    ServicesServices
    Custom Part Manufacturing
    Developer Services
    SDK Extended Maintenance Service
    SupportSupport
    Community
    Submit a Ticket
    Quality and Packaging
    How to Buy
    Report a Security Issue
    Contact Us
  • ⟵ Back
    Company
    About our CompanyAbout our Company
    Community Commitment
    Inclusion at Silicon Labs
    Management Team
    SustainabilitySustainability
    Environmental, Social & Governance
    Quality
    Supply Chain Responsibility
    News & EventsNews & Events
    Blog
    News Room
    Events
    Investor RelationsInvestor Relations
    Annual Report & Proxies
    Board of Directors
    Corporate Governance
    Quarterly Results
    SEC Filings
    CareersCareers
    Hyderabad Office
    Other Global Offices
    Contact Us
English
  • English
  • 简体中文
  • 日本語
  • Français
Ask AI
AskAI
Ask AI
//
Software and Tools // Simplicity SDK

Simplicity Software Development Kit

  1. Overview
  2. Downloads
  3. Tech Docs
  4. Community & Support
  1. Overview

Simplicity SDK

The Simplicity Software Development Kit (SDK) is an embedded software development platform for building IoT products based on our Series 2 and upcoming Series 3 wireless and MCU devices. It integrates wireless protocol stacks, middleware, peripheral drivers, a bootloader, and application examples – a solid framework for building power-optimized and secure IoT devices.

Simplicity SDK enables powerful features such as ultra-low power consumption, strong network reliability, support for large-node networks, multiprotocol, secure boot, and more. Additionally, Silicon Labs provides over-the-air (OTA) software and security updates to remotely update devices, minimize maintenance costs, and enhance the end-user product experience.

Simplicity SDK is a follow-on from our popular Gecko SDK, which will continue to be available providing long-term support for our  Series 0 and Series 1 devices.  For additional information on both series visit our SDK Release Notes page.

For information about our support and maintenance visit our SDK Release and Maintenance Policy page.

All wireless stacks integrated into a single software development kit

Features

Silicon Labs Simplicity SDK is equipped with all the specified features.

 O/S Services and Middleware include CPC, IO Streams, NVM, Power, Sleeptimer and other services

 Drivers include DMA, GPIO, LED/Button, Sensor and Serial drivers

 Security include PSA Crypto, mbed TLS, Key Management, SE FW

 Utilities (CLI)

 RTOS, FreeRTOS or Micrium OS

 CMSIS ( Core, NN, DSP)

 RAIL

 Wireless Protocol Stacks

 Bluetooth Low Energy, Bluetooth Mesh, Proprietary, Thread, Matter, Wi-SUN, Wi-Fi, Z-Wave, Zigbee

Supported Toolchain

 GNU toolchain with Cmake build system

 Keil ARM


All wireless stacks integrated into a single software development kit

 Production-ready: Certified, full featured and up-to-date with the latest specifications

 Proven: Customer deployment and long-term, large-scale testing

 Secure: Integrated with secure vault

 Quick Start: Hundreds of sample applications to get started
 

Common software platform for all products

 Portable: Common APIs across all hardware platforms

 Low-power: Utilities to enable lowest energy modes

 Secure: Secure boot, secure OTA, run-time integrity checking

 Optimized Radio: RAIL manages the complexity and provides simple APIs to stacks and customer applications
 

Developer Experience

 Consistent tools and workflows across technologies 

  1. Downloads

Download and Install Simplicity Studio

Get up and running quickly with precompiled demos, application notes and examples. Use advanced tools including energy profiling and network analysis to optimize your wireless systems. Choose your software package below.

Windows Installer (v1.0.1) >

Windows - MD5 | SHA256

Mac Installer (v1.0.1) >

Mac - MD5 | SHA256

Mac (ARM) Installer (v1.0.1) >

Mac (ARM) - MD5 | SHA256

Linux Installer (v1.0.1) >

Linux - MD5 | SHA256

*Simplicity Studio v6 User Guide

GitHub

Silicon Labs wireless IoT SDKs and code examples are also available for download on GitHub.

VS Code IDE Support

In addition to the Simplicity Studio IDE, we also support VS Code that can be used in companion with all of our unique development tools.

Simplicity Studio on Laptop Screen

Simplicity Studio

Development Platform

Get up and running quickly with precompiled demos, application notes and examples. Use advanced tools including energy profiling and network analysis to optimize your MCU and wireless systems.

Explore Studio
  1. Tech Docs

Simplicity SDK Release Notes (2025.6.2)

Latest Release - Q3/2025  (September 2025)
 

View Latest Versions of All SiSDK Release Notes Here

Platform Release Notes

Release Date Release Notes
2025 Latest View Latest Version 
2025/08 Version 5.1.3.0 
2025/04 Version 5.0.3.0 
2025/04 Version 5.1.2.0 
2025/02 Version 5.1.1.0 
2024 2024/12 Version 5.1.0.0 
2024/09 Version 5.0.2.0 
2024/07 Version 5.0.1.0 
2024/06 Version 5.0.0.0 

  1. Community & Support

Knowledge Base Articles

Browse our knowledge base articles for information about specific products.

Search Knowledge Base

User Forums

Browse technical questions, share your ideas, and learn more about our latest solutions.

Search the Forums

Questions? You're in the Right Place.

Silicon Labs has an active, knowledgeable user community of engineers and developers that are enthusiastic about solving problems.

Browse the Community
Silicon Labs

Stay Connected With Us

Plug into the latest on Silicon Labs products, including product releases and resources, documentation updates, PCN notification, upcoming events, and more.

  • About Us
  • Careers
  • Community
  • Contact Us
  • Corporate Responsibility
  • Investor Relations
  • Press Room
  • Privacy and Terms
  • Site Feedback

Connect With Us:

Silicon Labs
Copyright Silicon Laboratories. All rights reserved.

Your File Will Start Downloading Shortly

Thank you for downloading .

If you have any issues downloading, please contact sales support or product technical support.

Close
Loading Results
Close

Please select at least one column.