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ease
features
design
support

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Write a Review

Description

AltonaLab's IoT software features a robust and user-friendly CAD interface that is ideal for creating intricate diagrams. Be sure to explore the documentation and dive into the fascinating realm of IoT software! A new connection is initiated when the user left-clicks on a block's input or output, drags the mouse towards another input/output while keeping the button pressed, and then releases it over the target. To access the Parameters editor, simply double-click on the block or right-click, where each parameter is listed on a separate row. The uniqueness of the parameter Name is crucial as it must be distinctive within the diagram. When the diagram is locked, this parameter plays a vital role in defining the overall dimensions of the diagram. This clever mechanism effectively conceals any blocks and contours that extend beyond the visible area, which is determined by the parameters LockedCanvasHeight and LockedCanvasWidth, ensuring that only the controls within the visible area are displayed for user interaction. This streamlined approach maximizes usability and enhances the overall diagramming experience.

Description

Astah UML gives software teams and students a focused tool for UML 2.x modeling. Class, use case, sequence, activity, state machine, component, and deployment diagrams are all available, together with mind maps for early brainstorming. Every diagram is a view of a shared model, so renaming a class or changing a relationship updates it everywhere it appears. For AI-assisted work, Astah UML offers AI Chat Copilot and AI-assisted code reverse engineering, both of which connect to OpenAI, Azure OpenAI, Claude, Gemini, or any OpenAI-compatible endpoint through your own API key. A local MCP server lets external AI agents read and work with your models, and conventional reverse engineering turns existing Java, C#, and C++ code into diagrams without an AI service. Astah UML runs locally on Windows, macOS, and Linux. Developer: Change Vision, Inc. Current version: 12.0 (July 2026). Students can use it free of charge, and a 20-day trial is available for everyone else.

API Access

Has API No 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

Azure OpenAI Service No 
Claude No 
Gemini No 
HTML No 
Java No 
OpenAI No 
Redmine No 

Integrations

Azure OpenAI Service Yes 
Claude Yes 
Gemini Yes 
HTML Yes 
Java Yes 
OpenAI Yes 
Redmine Yes 

Pricing Details

$50 one-time payment
Free Trial No 
Free Version No 

Pricing Details

$6.99 per month
Plans from $6.99 per month. Free license for students. 20-day free trial.
Free Trial Yes 
Free Version No 

Deployment

Web-Based No 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based No 
On-Premises Yes 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac Yes 
Linux Yes 
Chromebook No 

Customer Support

Business Hours Yes 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

AltonaLab

Country

Bulgaria

Website

scada.altonalab.com

Vendor Details

Company Name

Change Vision, Inc.

Founded

2006

Country

Tokyo, Japan

Website

astah.net/products/astah-uml/

Product Features

Diagram

Data Import / Export Yes 
Drag & Drop No 
Flowchart Yes 
For Developers Yes 
Mind Map No 
Multi-User Collaboration No 
Organizational Charting No 
Templates No 

Product Features

Diagram

Data Import / Export Yes 
Drag & Drop Yes 
Flowchart No 
For Developers Yes 
Mind Map Yes 
Multi-User Collaboration No 
Organizational Charting No 
Templates Yes 

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