Astah UML

Astah UML

Change Vision, Inc.
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About

Arialine is an AI diagram generator and Mermaid diagram editor built for engineering and product teams working in Slack. Create flowcharts, architecture diagrams, sequence diagrams, UML, ERD, C4, swimlanes and other technical diagrams from plain language, Slack discussions, or Mermaid code. Paste valid Mermaid with /arialine and it renders without AI or usage limits. Diagrams stay editable in their Slack thread: reply to make changes, with every accepted edit saved as a version linked to the source message. Arialine includes history, undo, rewind, branching, decision context, PNG/SVG/PDF/.mmd exports, interactive HTML diagrams, Markdown-to-Slack-Canvas rendering, Mermaid 12 + ZenUML support, and an MCP server for Slack AI. It works on every Slack plan, including Free.

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).

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Supported

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

Audience

Software engineers, engineering teams, architects, DevOps/SRE teams, product teams, technical leads, and Slack-based organizations

Audience

Software developers, students, and teams who create UML diagrams for software design

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 Not Supported

API

Offers API Supported

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

No information available.
Free Version Supported
Free Trial Supported

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

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 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

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

Arialine
Founded: 2026
Ukraine
arialine.app

Company Information

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

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Categories

Diagram Supported

Categories

Diagram 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 Not Supported
Claude Not Supported
Gemini Not Supported
HTML Not Supported
Java Not Supported
Model Context Protocol (MCP) Supported
OpenAI Not Supported
Redmine Not Supported
Slack Supported

Integrations

Azure OpenAI Service Supported
Claude Supported
Gemini Supported
HTML Supported
Java Supported
Model Context Protocol (MCP) Not Supported
OpenAI Supported
Redmine Supported
Slack Not Supported
Claim Arialine and update features and information
Claim Arialine and update features and information
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Claim Astah UML and update features and information