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What is Astah UML?

Astah UML is a desktop UML 2.x modeling application from Change Vision, Inc. It is designed for development teams, universities, and individual engineers who need standard UML diagrams without the complexity of a full systems-engineering suite. Because designs are stored as models, an update made in one place carries through to every related diagram, which keeps design documentation consistent as a project grows. Version 12.0, released in July 2026, brings AI into UML modeling. 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. Local MCP server integration lets AI agents connect to Astah models. Plans start at $6.99 per month. A free license is available for students, and a 20-day free trial is offered. Astah UML runs on Windows, macOS, and Linux without a separate Java installation.

What is Arialine?

Arialine is an innovative diagram creation tool powered by AI, tailored specifically for engineering and product teams that operate within Slack. This platform enables users to generate a wide array of technical diagrams such as flowcharts, architecture diagrams, sequence diagrams, UML, ERD, C4, and swimlanes, utilizing simple language, conversations from Slack, or Mermaid code. Users can effortlessly create diagrams by entering valid Mermaid code with the command /arialine, allowing for rendering without any AI-based restrictions. Once created, these diagrams remain editable within the original Slack threads, allowing team members to collaborate and make necessary adjustments, with all approved changes tracked as versions linked to the initial message. Furthermore, Arialine includes features like history tracking, the ability to undo actions, rewind capabilities, branching options, and decision context, as well as supporting various export formats including PNG, SVG, PDF, and .mmd. It also facilitates interactive HTML diagrams and Markdown-to-Slack-Canvas rendering, ensuring compatibility with Mermaid 12 and ZenUML, while offering an MCP server for integrated Slack AI functionality. Significantly, Arialine is available across all Slack subscription tiers, including the Free plan, which empowers teams of all sizes to enhance their diagram creation and collaborative processes. This accessibility fosters a more inclusive environment for teams, encouraging creativity and efficiency in their projects.

Media

Media

No images available

Integrations Supported

Azure OpenAI Service
Claude
Gemini
HTML
Java
OpenAI
Redmine

Integrations Supported

Model Context Protocol (MCP)
Slack

API Availability

Has API

API Availability

Pricing Information

$6.99 per month
Plans from $6.99 per month. Free license for students. 20-day free trial.
Free Trial Offered?

Pricing Information

Pricing not provided
Free Version
Free Trial Offered?

Supported Platforms

Windows
Mac
On-Prem
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
Chromebook
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

Change Vision, Inc.

Date Founded

2006

Company Location

Tokyo, Japan

Company Website

astah.net/products/astah-uml/

Company Facts

Organization Name

Arialine

Date Founded

2026

Company Location

Ukraine

Company Website

arialine.app

Categories and Features

Diagram

Data Import / Export
Drag & Drop
For Developers
Mind Map
Templates

Categories and Features

Diagram

Not specified

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