Average Ratings 0 Ratings
Average Ratings 0 Ratings
Description
Astah Professional helps software teams design systems visually, before and while they write code. One application covers UML 2.x, entity-relationship diagrams, data flow diagrams, flowcharts, requirement diagrams, CRUD matrices, and mind maps, so architects and developers do not have to switch tools between notations.
Diagrams in Astah are views of a shared model. When you rename a class or change a relationship, every diagram that contains it is updated automatically.
For AI-assisted work, Astah Professional offers AI Chat Copilot and AI-assisted code reverse engineering, both of which connect to OpenAI, Azure OpenAI, Claude, Gemini, or any OpenAI-compatible endpoint through your own API key. A local MCP server lets external AI agents work with your Astah models. Conventional reverse engineering of Java, C#, and C++ code works without an AI service.
The tool runs locally on Windows, macOS, and Linux and ships with its own Java runtime. Developer: Change Vision, Inc. Current version: 12.0 (July 2026). A 20-day free trial is available.
Description
Astah System Safety is a comprehensive tool designed for model-based safety analysis in critical systems, created by Change Vision, Inc. This innovative software integrates SysML modeling with STAMP/STPA hazard assessments, GSN (Goal Structuring Notation) assurance cases, ASAM SCDL, and UAF, all within a single platform.
By linking safety analyses directly to the system model, it ensures that control structures, hazards, and safety arguments remain traceable to both requirements and system architecture. This tool is particularly valuable for safety engineers working in sectors such as automotive, aerospace, and embedded systems, facilitating safety-case development in compliance with standards like ISO 26262.
Additionally, the AI Chat Copilot feature utilizes your own API key for various services, including OpenAI and Azure OpenAI, and connects to a local MCP server to integrate external AI agents with your models. Models can be easily shared using XMI format and with Cameo Systems Modeler for enhanced collaboration.
Astah System Safety is compatible with both Windows and macOS platforms, although it does not include Fault Tree Analysis (FTA) or Failure Mode and Effects Analysis (FMEA). A free trial period lasting 40 days allows potential users to explore its capabilities before committing to a purchase. Overall, this tool represents a significant advancement in ensuring the safety of complex systems.
API Access
Has API
No
API Access
Has API
Yes
Integrations
Microsoft Excel
Yes
OpenAI
Yes
Azure OpenAI Service
Yes
C#
Yes
C++
Yes
Cameo Systems Modeler
No
Claude
Yes
Gemini
Yes
HTML
Yes
Java
Yes
Integrations
Microsoft Excel
Yes
OpenAI
Yes
Azure OpenAI Service
No
C#
No
C++
No
Cameo Systems Modeler
Yes
Claude
No
Gemini
No
HTML
No
Java
No
Pricing Details
$11.99 per month
Available from $11.99 per month.
Monthly, annual, or perpetual licenses. 20-day free trial.
Monthly, annual, or perpetual licenses. 20-day free trial.
Free Trial
Yes
Free Version
No
Pricing Details
$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.
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 Trial
Yes
Free Version
No
Deployment
Web-Based
No
On-Premises
Yes
iPhone App
No
iPad App
No
Android App
No
Windows
Yes
Mac
Yes
Linux
Yes
Chromebook
No
Deployment
Web-Based
No
On-Premises
Yes
iPhone App
No
iPad App
No
Android App
No
Windows
Yes
Mac
Yes
Linux
No
Chromebook
No
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Vendor Details
Company Name
Change Vision, Inc.
Founded
2006
Country
Tokyo, Japan
Website
astah.net/products/astah-professional/
Vendor Details
Company Name
Change Vision, Inc.
Founded
2006
Country
Tokyo, Japan
Website
astah.net/products/astah-system-safety/
Product Features
Diagram
Data Import / Export
Yes
Drag & Drop
Yes
Flowchart
Yes
For Developers
Yes
Mind Map
Yes
Multi-User Collaboration
Yes
Organizational Charting
No
Templates
Yes
Flowchart
Collaboration
No
Diagramming
Yes
Drag & Drop
Yes
Organizational Charting
No
Process Mapping
No
Revision Management
No
Templates
Yes
Text to Chart
Yes
Mind Mapping
Brainstorming
Yes
Flowchart
Yes
Presentation Tools
No
Project Planning
Yes
Publishing / Sharing
No
Templates
Yes