Astah System Safety - 2026 Pricing, Features, Reviews & Alternatives

Astah System Safety is a model-based systems engineering (MBSE) tool designed to support safety analysis and assurance cases. It enables systems engineers to create SysML models and diagrams to capture system requirements, behavior, structure and more. Key capabilities include support for STAMP safety analysis, STPA hazard analysis, GSN assurance cases, ASAM SCDL for describing system components, and ISO 26262 functional safety standards for automotive applications.

With Astah System Safety, users can build out system models with requirements diagrams to capture intended functionality early on. Behavioral modeling constructs like activity, sequence and state machine diagrams ensure logical flows are well-defined. Structure diagrams visually map system component relationships. STPA interfaces allow analysts to methodically step through UCAs, losses and constraints. GSN diagrams facilitate building structured assurance arguments and safety cases. Traceability mapping across diagrams enables end-to-end coverage for comprehensive analysis.

The tool also enables standards compliance support, with native capabilities for ISO 26262 functional safety in the automotive industry. Requirements management, hazard/risk analysis, functional safety concepts and more can be modeled out to demonstrate rigor in the safety lifecycle. ASAM SCDL exports provide component specification details for supply chain partners.

With various modeling, analysis, and documentation features, Astah System Safety aims to provide systems engineers a specialized and integrated toolkit for safety-critical contexts. The ability to import/export XML and Excel files allows integrating Astah System Safety into broader toolchains and processes as well.