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What is StarUML?

The software seamlessly aligns with the UML 2.X standard metamodel, supporting an extensive array of diagrams such as class, object, use case, component, deployment, composite structure, sequence, communication, statechart, activity, timing, interaction overflow, information flow, and profile diagrams. Beyond UML, it also supports SysML diagrams, including requirement, block definition, internal block, and parametric diagrams, providing users with a robust modeling toolkit. Designed for Retina (High-DPI) displays, the software guarantees that all diagrams, text, and icons maintain exceptional clarity and can be exported as High-DPI images in formats like PNG and JPEG. Users can easily explore and incorporate a wide range of third-party extensions, many of which are open-source and accessible via GitHub. The tool features a Quick Edit functionality that incorporates various shorthands, enabling rapid creation of elements and relationships, including sub-classes and supporting interfaces, thereby significantly boosting productivity. This flexibility and capability render it an essential asset for professionals who require thorough modeling solutions across various domains. Moreover, the user-friendly interface ensures that even newcomers can quickly adapt and leverage its extensive features.

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.

Media

Media

Integrations Supported

Integrations Supported

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

API Availability

API Availability

Pricing Information

$99 per user

Pricing Information

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

Supported Platforms

Windows
Mac
Linux

Supported Platforms

Windows
Mac
On-Prem
Linux

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

StarUML

Company Website

staruml.io

Company Facts

Organization Name

Change Vision, Inc.

Date Founded

2006

Company Location

Tokyo, Japan

Company Website

astah.net/products/astah-professional/

Categories and Features

Data Modeling

Not specified

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

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