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What is Astah Professional?

Astah Professional is a desktop modeling application from Change Vision, Inc. for organizations that design software and systems. It brings UML 2.x, ER diagrams, data flow diagrams, flowcharts, requirement diagrams, CRUD, and mind maps together in one product, which reduces the number of tools a team needs to license and learn. Because Astah stores designs as models rather than drawings, an update made in one place carries through to every related diagram. This keeps design documentation consistent as projects change. Version 12.0, released in July 2026, brings AI into the modeling workflow. 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, so AI usage stays under the contracts you already manage. Local MCP server integration lets AI agents connect to your Astah models. Licenses are available monthly, annually, or as a perpetual license, starting at $11.99 per month. Astah Professional runs on Windows, macOS, and Linux without a separate Java installation, and a 20-day free trial is available.

What is Altova UModel?

Maintain easy access to your favorite diagram views and UML tools to boost both productivity and efficiency. UModel provides significant customization capabilities for your UML diagrams, allowing you to modify aspects such as size, position, color, font settings, and line styles to fit your preferences. Use case diagrams are typically examined separately from other software architecture diagrams since they play a crucial role in defining project requirements and delineating the application’s scope during the development phase. Rarely does any project employ every single type of UML diagram; instead, the adaptability of software modeling caters to personal preferences and diverse tasks that require different diagram styles. Regardless of the diagrams you decide to generate, UModel presents an exceptional visual interface paired with intuitive features that make UML modeling both enjoyable and uncomplicated. Each type of diagram comes with its dedicated toolbar, which helps maintain an organized workspace by avoiding unnecessary icons. Additionally, you can choose to turn on or off toolbar text labels and manage the visibility of specific toolbars, offering you comprehensive control over your modeling environment. With these customizable options, you can cultivate a more personalized and effective workspace that aligns with your specific needs, ultimately fostering a more streamlined workflow. This flexibility ensures that you can adapt the tools to support your unique modeling objectives as they evolve.

Media

Media

Integrations Supported

Azure OpenAI Service
C#
C++
Claude
Gemini
HTML
Java
Mermaid Chart
Microsoft 365
Microsoft Excel
OpenAI
PHP
Redmine

Integrations Supported

API Availability

API Availability

Pricing Information

$11.99 per month
Available from $11.99 per month.
Monthly, annual, or perpetual licenses. 20-day free trial.
Free Trial Offered?

Pricing Information

€129 one-time payment

Supported Platforms

Windows
Mac
On-Prem
Linux

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Standard Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Change Vision, Inc.

Date Founded

2006

Company Location

Tokyo, Japan

Company Website

astah.net/products/astah-professional/

Company Facts

Organization Name

Altova

Date Founded

1992

Company Location

United States

Company Website

shop.altova.com/UModel

Categories and Features

Diagram

Data Import / Export
Drag & Drop
Flowchart
For Developers
Mind Map
Multi-User Collaboration
Templates

Flowchart

Diagramming
Drag & Drop
Templates
Text to Chart

Mind Mapping

Brainstorming
Flowchart
Project Planning
Templates

Process Mapping

Not specified

Categories and Features

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