Dia Reviews & Ratings

Dia

4.0 out of 5 stars

Ratings and Reviews 1 Rating

Total 4 out of 5 stars
ease 5 out of 5 stars
features 4 out of 5 stars
design 4 out of 5 stars
support 5 out of 5 stars

Ratings and Reviews 0 Ratings

Total 0 out of 5 stars
ease 0 out of 5 stars
features 0 out of 5 stars
design 0 out of 5 stars
support 0 out of 5 stars

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What is Dia?

Dia is a cross-platform, open-source tool tailored for generating structured diagrams such as software architecture charts, database models, and engineering schematics. It supports shape-based drawing with a rich library of customizable symbols, and advanced users can extend its functionality using Python scripting. Available under the GNU GPLv2 license, Dia runs on Windows, Mac OS X, and Linux, making it a flexible option for users in varied environments. The application offers multilingual support, with over 60 languages integrated, and features such as rotating elements, importing custom shapes, and exporting in SVG and XML formats. The download packages are small, making installation quick and resource-efficient. The platform includes thorough documentation, shape creation guides, and a robust FAQ section. For community engagement and technical help, users can access mailing lists and bug trackers. Whether you're designing a basic org chart or a complex system layout, Dia delivers the tools to get the job done effectively.

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
Claude Duet
Claude for Legal
Gemini
HTML
Java
Mermaid
Microsoft 365
Microsoft Excel
OpenAI
PHP
Redmine

API Availability

API Availability

Pricing Information

Pricing not provided

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

Standard Support
Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub
On-Site Training

Training Options

Documentation Hub

Company Facts

Organization Name

The Dia Developers

Company Location

Germany

Company Website

dia-installer.de

Company Facts

Organization Name

Change Vision, Inc.

Date Founded

2006

Company Location

Tokyo, Japan

Company Website

astah.net/products/astah-professional/

Categories and Features

Diagram

Flowchart
Organizational Charting

Process Mapping

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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