Software Tools

To ensure that the appropriate interfaces for a seamless integration are adopted, exida promotes a tool-based approach that allows to cover almost the entire V-cycle.

In this section the self-developed tools by exida are listed and briefly described.


SILcal v9 is an integrated tool suite to perform all safety analyses required by ISO 26262 / IEC 61508 for the development of a safety critical system and its hardware/ software components.
It includes the SILcal v.8 features guiding through the FMEDA process and calculating classified failure rates and the Safe Failure Fraction (SFF) of an electronic or mechanical device according to the requirements of EN / IEC 61508-2 or the required safety metrics according to ISO 26262.

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The Safety Library is composed by a set of software (C) modules implementing Safety Integrity Functions (SIF) also called Safety Mechanisms (SM) to protect the system against systematic and random failures and to ensure the appropriate integrity of the execution environment for Safety Functions (SF) which ultimately are there to ensure a Safety Goals.



SILcap is an analysis tool guiding through the Safety Criticality Analysis/System FMEA and the subsequent Software HAZOP of an (programmable) electronic system or sub-system according to the requirements of EN / IEC 61508-2/-3.

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exSILentia helps users achieve a new level of consistency and productivity in the design of their Safety Instrumented Systems (SIS). All-new functionality allows users to follow the entire IEC 61511 / ISA 84 functional safety lifecycle for the first time using a single tool. It also supports compliance with regulations such as OSHA PSM 1910.119 (USA) and Seveso II (Europe).


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SILAlarm™ is a tool for facilitating and documenting the results of alarm rationalization in a master alarm database. It was developed in accordance with the ISA-18.2 standard “Management of Alarm Systems for the Process Industries” and EEMUA 191. SILAlarm guides a rationalization team through a systematic, tailorable process of reviewing, justifying and documenting the design of each alarm.

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The SERH, which has been developed from exida product design, reviews activities (including FMEDA analyses), and contains data from over 1400 components.