Safety software and systems designer

The CLEARSY company

CLEARSY was founded on January 1, 2001 by the team of engineers responsible for the industrialisation of the formal modelling tool called Atelier B, used in the railway sector to produce safety software.

CLEARSY: safety systems engineering

We are a French SME, specialised in the realisation of safety systems and software from level SIL1 to SIL4. We develop complex systems by ensuring their design, their validation, verification and safety study, right up to their commissioning.

CLEARSY produces safe systems and software in the railway, automotive, military, space and nuclear fields.

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CLEARSY participates in the conference ISOLA 2021
For the 10th International Symposium On Leveraging Applications of Formal Methods, Verification and Validation (ISOLA 2021), CLEARSY is going to […]
SSSI web Fire supervision in Paris metro stations
CLEARSY in charge of the Signalling and Command Report for the RATP The SYMPHONIE SSI project aims to provide the […]
New SIL2 certification for a display screen (DMI) ETCS Baseline 3
We had announced the SIL2 certification of the display screen developed by CENTRALP, the ETCS Baseline 3 application developed by […]
CLEARSY will participate to RSSI trade show in Indianapolis next September.
The “Railway Systems Suppliers” (RSSI) is a trade association of over 280 member companies serving the communication and signal segment […]
The safety-critical data validation tool is certified T2 SIL4.
The CLEARSY safety-critical data validation tool is now certified T2 for SIL4 level in accordance to the EN 50128:2011 standard, […]
CLEARSY IS QUALIFIED UTO BY EDF, the French multinational electric utility company
The EDF UTO team has just confirmed the qualification of CLEARSY for the following activity: intellectual service and consulting, study […]

Safety software and systems

All our security systems and software available below. If you have a specific problem, contact us.