Phaedrus Systems supports engineers at all stages of embedded safety-critical and high-integrity projects. Tools available include requirements capture for IEC 61508, EN 50128 , DO178 and nuclear applications, a SIL3 RTOS and compiler validation reports. Consultants have experience working on automotive, rail and aerospace applications, meeting standards such as IEC 61508 SIL4, and D0178B. Backing these is a wide range of other relevant embedded tools, including code checkers, USB and TCP/IP stacks, development kits, debuggers and ICEs. There is also a Technical library


Phaedrus Systems Appointed Razorcat TESSY distributor for UK


TESSY automates the whole unit test cycle including regression testing for your embedded software in C/C++ on different target systems.


As an easy-to-install and easy to operate testing tool TESSY guides you through the unit test workflow from the project setup through the test design and execution to the result analysis and reporting.


TESSY takes additionally care of the complete test organization as well as the test management, including requirements, coverage measurement, and traceability click here for more information

Press Release for Razorcat


High-Integrity Software

17th October,

Bristol UK

High Integrity Software is a conference that is an absolute must for anyone working in the area. As well as a host of good quality technical papers,There is a good exhibition. See video of the 2014 event. More information at

Percepio Tracealyzer

Percepio Tracealyzer 1-2-1 Getting Started training


Book a free 45 minute consulting session with Senior FAE Niclas Lindblom. This is not a slideshow presentation. Video conference with Niclas to get started with Tracealyzer using your own project, tools, and hardware. Each session is unique. More information click here



Tracealyzer for

ThreadX Available 27 April 2017

ARM Keil RTX5 Available 05 May 2017

More information click here

See Tracealyzer in space!! Click here

STIMULUS by Argosim

Compiler Validation Service


For safety/security related and critical systems Validation Organisations are demanding validated compilers.  More often validated on-target.   

There is a lot more to validating a compiler than getting a test suite and running it.     Phaedrus Systems can now provide an On-Target compiler Validation Service to the highest standards.


For more information and supporting documents on how to validate a compiler click here


Independent Advice.

Independent advice is strengthened by the company's founder being an active participant in several standards bodies, including ISO C, C++ and IEC 61508-3, and a principal author of MISRA-C:2004. and member of the MISRA-C2012 team .If you need advice please call or email.



IET Business PArtner

Safety Critical Systems Club


National Microelectronics Institute

IoT Security Foundation


IoT Security Foundation




Software Systems Engineering Initiative

Eur Ing