Astah UMLChange Vision, Inc.
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SysMLv2 EditorChange Vision, Inc.
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Related Products
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About
Astah UML is a UML 2.x diagramming tool for software design, developed by Change Vision, Inc. It covers the core UML diagrams, including class, use case, sequence, activity, state machine, component, and deployment diagrams, plus mind maps.
Astah creates models rather than drawings: when you change a model element, every diagram that uses it is updated, so your design stays consistent.
AI features include AI Chat Copilot and AI-assisted code reverse engineering, which use your own API key for OpenAI, Azure OpenAI, Claude, Gemini, or an OpenAI-compatible service. A local MCP server lets external AI agents work with your Astah models. Conventional reverse engineering of Java, C#, and C++ code is also included.
Astah UML runs on Windows, macOS, and Linux with a bundled Java runtime. A free license is available for students, and a 20-day free trial is available.
Latest version: 12.0 (released July 15, 2026).
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About
SysMLv2 Editor is a Visual Studio Code extension for writing SysML v2 models in the textual notation, developed by Change Vision, Inc. Models are plain .sysml files, so they can be tracked in Git, compared in pull requests, and reviewed alongside source code.
Features include syntax highlighting, real-time validation against the SysML v2 grammar, navigate to definition, an outline view, and diagram generation for reviewing structure and behavior. Diagrams are read-only; editing happens in the text. For editing directly on diagrams, Change Vision offers SysMLv2 Modeler (early access).
SysMLv2 Editor runs on Windows, macOS, and Linux. It is included with an Astah SysML, Astah System Safety, or Astah Faculty Site License, with no separate purchase, and a 20-day free trial is available. It does not import SysML v1 models from Astah SysML.
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Platforms Supported
Windows
Supported
Mac
Supported
Linux
Supported
Cloud
Not Supported
On-Premises
Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Supported
Mac
Supported
Linux
Supported
Cloud
Not Supported
On-Premises
Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Software developers, students, and teams who create UML diagrams for software design
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Audience
Systems engineers and teams who write SysML v2 models as text in Visual Studio Code and manage them in Git
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Support
Phone Support
Not 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
Supported
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API
Offers API
Not Supported
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
$6.99 per month
Plans from $6.99 per month. Free license for students. 20-day free trial.
Free Version
Not Supported
Free Trial
Supported
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Pricing
$140 per year
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
Not Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationChange Vision, Inc.
Founded: 2006
Japan
astah.net/products/astah-uml/
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Company InformationChange Vision, Inc.
Founded: 2006
Japan
astah.net/products/sysmlv2-editor/
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Alternatives |
Alternatives |
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Categories |
Categories |
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Diagram Features
Data Import / Export
Supported
Drag & Drop
Supported
Flowchart
Not Supported
For Developers
Supported
Mind Map
Supported
Multi-User Collaboration
Not Supported
Organizational Charting
Not Supported
Templates
Supported
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Integrations
Azure OpenAI Service
Supported
Claude
Supported
Gemini
Supported
HTML
Supported
Java
Supported
OpenAI
Supported
Redmine
Supported
Visual Studio Code
Not Supported
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Integrations
Azure OpenAI Service
Not Supported
Claude
Not Supported
Gemini
Not Supported
HTML
Not Supported
Java
Not Supported
OpenAI
Not Supported
Redmine
Not Supported
Visual Studio Code
Supported
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