---
title: "Safety Critical Operating System - SAFERTOS | WITTENSTEIN"
url: "https://www.wittenstein-group.com/en-uk/products/software-and-digitalization/safety-critical-operating-system"
description: Pre-certified safety-critical RTOS from WITTENSTEIN. Achieve IEC61508 SIL3 readiness with SAFE RTOS, plus certification support and BSP services. Learn more.
date: 2026-04-10
modified: 2026-04-10
lastUpdated: 2026-04-13
---

# Safety Critical Operating System - SAFERTOS | WITTENSTEIN

![](https://www.wittenstein-group.com/fileadmin/_processed_/2/5/csm_Headerbild_Safety_Critical_Operating_System_df966aaa79.webp)

Safety Critical Operating System
================================

WITTENSTEIN high integrity systems are experts in embedded Real Time Operating System (RTOS)

##### SAFE**RTOS®**

Pre-certified safety RTOS, for embedded systems requiring certification.

##### Enhanced Security Module

An addition to SAFE**RTOS®** for applications requiring hardened security features.

##### OPEN**RTOS®**

A commercial license for Amazon FreeRTOS, including the FreeRTOS Kernal.

> Integrity is fundamental to both our quality department and our products. Our company reflects our commitment to high standards of honesty and transparency in everything we do.

The High Integrity Systems Team

![](https://www.wittenstein-group.com/fileadmin/_processed_/5/f/csm_Create_an_artistic__abstract_representation_using___1__0e0a5221df.webp)

It delivers superior performance and pre-certified dependability, whilst utilizing minimal resources.

### Design Assurance

SAFE**RTOS****®** is tailored to your specific processor/compiler combination, and delivered with full source code and our Design Assurance Pack (DAP).

### A Safety Systems Company

We offer Safety Critical design review services, consultancy on the safety certification process, training and BSP solutions.

### Easier Certification

Using our extensive Safety Critical design experience we have made certifying SAFE**RTOS****®** integrated within a product an easy and hassle-free process.

### Reducing Risks

SAFE**RTOS**® has been independently certified many times on numerous platforms, to IEC61508-3 SIL3, the highest possible SIL level for a software only component.

Initially established within the aerospace sector, WITTENSTEIN High Integrity Systems (WHIS) has spent more than 25 years advancing the field of safety-focused software engineering. Their software supports critical operations in demanding environments around the world.

WHIS is dedicated to the development of safety-critical systems. This safety focus gives the company a unique position in the real-time operating system (RTOS) Market. Their deep-rooted understanding of safety-critical development is reflected in the success of their flagship product, SAFE**RTOS**®.

SAFE**RTOS**® is a rigorously certified RTOS that combines strong safety credentials with efficient performance. First independently assessed by TÜV SÜD in 2007, SAFE**RTOS**® has since been successfully certified and deployed across a broad range of platforms.

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 Contact us
------------

Would you like to learn more about our solutions?
We would be happy to advise you—personally, competently, and tailored to your requirements.

[high integrity systems website](https://www.highintegritysystems.com/)