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What is DiagramDeck?

DiagramDeck is a web-based collaborative diagramming tool crafted for teams to effectively produce and manage architecture diagrams, flowcharts, and workflows. Its intuitive drag-and-drop interface allows for seamless real-time collaboration and supports compatibility with draw.io files, enhancing its appeal to a wide range of users. Teams have the ability to work together on diagrams, offer feedback through comments, and see all modifications reflected immediately, which helps to eliminate any version discrepancies. Users can also export their diagrams in multiple formats, simplifying the processes of sharing and documentation. As a reliable and straightforward solution, DiagramDeck stands out as a competitive alternative to well-known software like Lucidchart, Visio, and draw.io, meeting the demands of contemporary collaborative projects. Furthermore, its focus on user experience and functionality makes it an attractive choice for teams seeking to streamline their diagramming processes.

What is Astah Professional?

Astah Professional is a desktop modeling application from Change Vision, Inc. for organizations that design software and systems. It brings UML 2.x, ER diagrams, data flow diagrams, flowcharts, requirement diagrams, CRUD, and mind maps together in one product, which reduces the number of tools a team needs to license and learn. Because Astah stores designs as models rather than drawings, an update made in one place carries through to every related diagram. This keeps design documentation consistent as projects change. Version 12.0, released in July 2026, brings AI into the modeling workflow. 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, so AI usage stays under the contracts you already manage. Local MCP server integration lets AI agents connect to your Astah models. Licenses are available monthly, annually, or as a perpetual license, starting at $11.99 per month. Astah Professional runs on Windows, macOS, and Linux without a separate Java installation, and a 20-day free trial is available.

Media

No images available

Media

Integrations Supported

Integrations Supported

Azure OpenAI Service
C#
C++
Claude
Claude Duet
Claude for Legal
Gemini
HTML
Java
Mermaid
Microsoft 365
Microsoft Excel
OpenAI
PHP
Redmine

API Availability

API Availability

Pricing Information

$0
Free Version

Pricing Information

$11.99 per month
Available from $11.99 per month.
Monthly, annual, or perpetual licenses. 20-day free trial.
Free Trial Offered?

Supported Platforms

SaaS

Supported Platforms

Windows
Mac
On-Prem
Linux

Customer Service / Support

Not specified

Customer Service / Support

Web-Based Support

Training Options

Not specified

Training Options

Documentation Hub

Company Facts

Organization Name

DiagramDeck

Date Founded

2026

Company Location

Finland

Company Website

diagramdeck.com

Company Facts

Organization Name

Change Vision, Inc.

Date Founded

2006

Company Location

Tokyo, Japan

Company Website

astah.net/products/astah-professional/

Categories and Features

Diagram

Not specified

Categories and Features

Diagram

Data Import / Export
Drag & Drop
Flowchart
For Developers
Mind Map
Multi-User Collaboration
Templates

Flowchart

Diagramming
Drag & Drop
Templates
Text to Chart

Mind Mapping

Brainstorming
Flowchart
Project Planning
Templates

Process Mapping

Not specified

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