Astah UMLChange 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.
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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).
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Platforms Supported
Windows
Supported
Mac
Supported
Linux
Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Supported
iPad
Supported
Android
Supported
Chromebook
Supported
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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
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Audience
Software engineers, engineering teams, architects, DevOps/SRE teams, product teams, technical leads, and Slack-based organizations
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Audience
Software developers, students, and teams who create UML diagrams for software design
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and VideosNo images available
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Screenshots and Videos |
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Pricing
No information available.
Free Version
Supported
Free Trial
Supported
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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
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationArialine
Founded: 2026
Ukraine
arialine.app
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Company InformationChange Vision, Inc.
Founded: 2006
Japan
astah.net/products/astah-uml/
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Categories |
Categories |
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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
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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
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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
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