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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 AVEVA Diagrams?

AVEVA Diagrams provides a fast, dependable, and effective method for creating and overseeing various diagrams, including Process Flow Diagrams (PFDs), Piping and Instrumentation Diagrams (P&IDs), and Heating, Ventilation, and Air Conditioning (HVAC) layouts, while ensuring they are intricately connected to the project database. Utilizing AVEVA’s unique database technology, information produced during the diagram creation phase is methodically captured and stored within a schematic model database. This feature enhances the efficient handling of design data, enabling easy access in a secure, collaborative, and data-oriented setting, available through AVEVA Connect or implemented directly on-site as part of our all-encompassing Integrated Engineering and Design (IE&D) solutions. In addition, the incorporation of both cloud-based and on-premises solutions grants users the adaptability to select the deployment option that aligns with their specific operational needs. This flexibility ensures that teams can work effectively, regardless of their location or project scale.

Media

Media

Integrations Supported

Azure OpenAI Service
Claude
Gemini
HTML
Java
OpenAI
Redmine

Integrations Supported

AVEVA Unified Engineering

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

Supported Platforms

Windows
Mac
On-Prem
Linux

Supported Platforms

SaaS
On-Prem

Customer Service / Support

Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

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

AVEVA

Company Location

United Kingdom

Company Website

www.aveva.com/en/products/pid-and-diagrams/

Categories and Features

Diagram

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

Categories and Features

Diagram

Not specified

Engineering

Not specified

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