Astah UML

Astah UML

Change Vision, Inc.
SysMLv2 Editor

SysMLv2 Editor

Change Vision, Inc.
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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).

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.

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

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

Audience

Software developers, students, and teams who create UML diagrams for software design

Audience

Systems engineers and teams who write SysML v2 models as text in Visual Studio Code and manage them in Git

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

No images available

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

Pricing

$140 per year
Free Version Not Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Change Vision, Inc.
Founded: 2006
Japan
astah.net/products/astah-uml/

Company Information

Change Vision, Inc.
Founded: 2006
Japan
astah.net/products/sysmlv2-editor/

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Astah UML

Astah UML

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Categories

Diagram Supported

Categories

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

Integrations

Azure OpenAI Service Supported
Claude Supported
Gemini Supported
HTML Supported
Java Supported
OpenAI Supported
Redmine Supported
Visual Studio Code Not Supported

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
Claim Astah UML and update features and information
Claim Astah UML and update features and information
Claim SysMLv2 Editor and update features and information
Claim SysMLv2 Editor and update features and information