Astah System SafetyChange Vision, Inc.
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Related Products
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About
20-sim is a modeling and simulation software package for mechatronic systems. With 20-sim you can enter models graphically, similar to drawing an engineering scheme. With these models, you can simulate and analyze the behavior of multi-domain dynamic systems and create control systems. You can even generate C-code and run this code on hardware for rapid prototyping and HIL-simulation. 20-sim provides you with features that allow you to create models very quickly and intuitively. You can create models using equations, block diagrams, physics blocks and bond graphs. Various features help you to build your models, simulate them and analyze their performance. Models are built in the 20-sim editor. This editor contains a large model library with building blocks to help you to construct models. The model library contains many components such as block diagrams and bond graphs.
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About
Astah System Safety is a model-based safety analysis tool for safety-critical systems, developed by Change Vision, Inc. It combines SysML modeling with STAMP/STPA hazard analysis, GSN/D-Case assurance cases, ASAM SCDL safety concepts, and UAF in one tool.
Safety analyses are linked to the system model, so control structures, hazards, and safety arguments stay traceable to requirements and architecture. Safety engineers in automotive, aerospace, railway, and embedded systems use it to build safety cases for standards such as ISO 26262.
AI Chat Copilot and a local MCP server require your own API key from a supported AI service (OpenAI, Claude, Gemini, or an OpenAI-compatible endpoint). SysML models can be exchanged with Cameo Systems Modeler through XMI import and export.
Runs on Windows and macOS. FTA, FMEA, and simulation are not included. A 40-day free trial is available.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Supported
Mac
Supported
Linux
Not Supported
Cloud
Not Supported
On-Premises
Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Simulation software that helps engineers with physics modeling
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Audience
Safety and systems engineers in automotive, aerospace, railway, defense, robotics, and medical device development
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Support
Phone Support
Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
€108 one-time payment
Free Version
Not Supported
Free Trial
Not Supported
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Pricing
$550 per year
Annual license: $550 per user per year. Annual floating license: $1,050 per seat per year, with a self-hosted license server required. Per-seat floating prices decrease with larger packs (for example, $9,500 for 10 seats). Monthly licenses are not available.
For universities, the Faculty Site License ($900) covers Astah System Safety, Astah SysML, and Astah Professional for all faculty and students in a department. A 40-day free trial is available. AI features (AI Chat Copilot and the local MCP server) require your own API key from a supported AI service, and API usage is billed separately by that provider.
Free Version
Not Supported
Free Trial
Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company Information20-sim
The Netherlands
www.20sim.com
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Company InformationChange Vision, Inc.
Founded: 2006
Tokyo, Japan
astah.net/products/astah-system-safety/
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Categories |
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Integrations
Cameo Systems Modeler
Not Supported
Microsoft Excel
Not Supported
OpenAI
Not Supported
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Integrations
Cameo Systems Modeler
Supported
Microsoft Excel
Supported
OpenAI
Supported
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