Astah UML

Astah UML

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

QElectroTech is a free, open source software designed for creating complex industrial electrical diagrams. It supports a wide range of diagram types, including electrical, plumbing, geothermal, air-conditioning, hydraulics, pneumatics, domotic, and photovoltaic systems, among others. With over 8,000 symbols available in the latest version, it allows users to create detailed technical diagrams across various fields. The software is licensed under the GNU/GPL license and is available for Windows, Mac OS, and Linux platforms. Its features include a flexible symbol library and user-friendly tools for creating professional-grade schematics. The software is supported by contributions from industrial companies and engineers, including Soliton Controles Industriais and C-Born Engineering, which assist in development and translation. Additionally, QElectroTech supports DXF export for easier integration with other software.

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 Not 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

Engineers, designers, and professionals in need of a tool to create industrial systems diagrams across various fields

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

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

Free
Free Version Supported
Free Trial Not Supported

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

Reviews/Ratings

Overall 3.0 / 5
ease 2.0 / 5
features 5.0 / 5
design 5.0 / 5
support 4.0 / 5

Pros & Cons from Real Users

Pros

  • Excellent cross-referencing system (contacts/coils), easy component creation, and bills of materials that save hours of work.
  • Nothing. I liked nothing about this, but I never got past trying to create a title block, so for me there is NOTHING to like.

Cons

  • The initial learning curve, as drawing measurements are based on pixels.
  • The dev's use of unusual methods to do simple tasks

Training

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

Training

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

Company Information

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

Company Information

QElectroTech
qelectrotech.org

Alternatives

Astah Professional

Astah Professional

Change Vision, Inc.

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Categories

Diagram Supported

Categories

Electrical Design Supported

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

Integrations

Azure OpenAI Service Not Supported
Claude Not Supported
Gemini Not Supported
HTML Not Supported
Java Not Supported
OpenAI Not Supported
Redmine Not Supported
Claim Astah UML and update features and information
Claim Astah UML and update features and information
Claim QElectroTech and update features and information
Claim QElectroTech and update features and information