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What is Astah UML?

Astah UML is a desktop UML 2.x modeling application from Change Vision, Inc. It is designed for development teams, universities, and individual engineers who need standard UML diagrams without the complexity of a full systems-engineering suite. Because designs are stored as models, an update made in one place carries through to every related diagram, which keeps design documentation consistent as a project grows. Version 12.0, released in July 2026, brings AI into UML modeling. AI Chat Copilot and AI-assisted code reverse engineering run on your organization's own API key for OpenAI, Azure OpenAI, Claude, or Gemini, or for an OpenAI-compatible service. Local MCP server integration lets AI agents connect to Astah models. Plans start at $6.99 per month. A free license is available for students, and a 20-day free trial is offered. Astah UML runs on Windows, macOS, and Linux without a separate Java installation.

What is ArgoUML?

ArgoUML is an open-source tool for UML modeling that is freely available and supports all standard UML 1.4 diagrams, functioning on any Java platform and offering translations in ten different languages. This adaptable software allows users to create and edit a wide range of UML diagrams, including class, state, use case, activity, collaboration, deployment, and sequence diagrams. Featuring a user-friendly interface that is divided into four distinct panels—project hierarchy, diagram editor, to-do list, and object detail panel—ArgoUML simplifies the modeling experience. It operates under the Eclipse Public License and has gained worldwide popularity, with downloads exceeding 80,000. Moreover, the platform includes extensive user manuals, quick start guides, and essential resources for both users and developers, promoting a sense of community involvement and contribution. Users are actively encouraged to report any bugs, propose new features, and engage in the ongoing development of ArgoUML, which not only enhances the software’s functionality but also fosters a vibrant user community. This collaborative spirit not only enriches the tool itself but also helps to create a supportive environment for all participants.

Media

Media

Integrations Supported

Java
Azure OpenAI Service
Claude
Gemini
HTML
OpenAI
Redmine

Integrations Supported

Java

API Availability

Has API

API Availability

Pricing Information

$6.99 per month
Plans from $6.99 per month. Free license for students. 20-day free trial.
Free Trial Offered?

Pricing Information

Free
Free Version

Supported Platforms

Windows
Mac
On-Prem
Linux

Supported Platforms

Windows

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
On-Site Training

Company Facts

Organization Name

Change Vision, Inc.

Date Founded

2006

Company Location

Tokyo, Japan

Company Website

astah.net/products/astah-uml/

Company Facts

Organization Name

ArgoUML

Company Location

United States

Company Website

argouml-tigris-org.github.io/tigris/argouml/

Categories and Features

Diagram

Data Import / Export
Drag & Drop
For Developers
Mind Map
Templates

Categories and Features

Diagram

Not specified

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