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SPECIFICTION
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Astah Professional

astah.net

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Spec score 8.3 #12 of 36 in Diagram Software

What it is

Astah Professional is a desktop modeling tool for visualizing software design with diagrams and code-related models. It supports UML diagrams, ERD, data flow, flowchart, requirement, CRUD, and mind map diagrams. ER diagrams can be created manually or generated from imported database tables, with SQL export and reverse engineering. Modeling features include automatic layout, traceability maps, project comparison and merging, map view, and state-transition paths and tables. Astah can reverse engineer Java, C#, and C++ and generate code for PHP, SQL, and other languages. Team features cover file locking, file merging, model comparison, and read-only project references; real-time collaboration is not available. Its API and Script Editor can retrieve model information and create or modify diagrams and models. Plug-ins listed include Mermaid, Microsoft Office, Redmine, and Miro. AI Chat Copilot requires an external provider API key or endpoint. Supported platforms listed for Professional 12.0 include Windows 11 x64, macOS 13+ arm64, Ubuntu 24.04, and Rocky Linux 9.6.

Spec sheet

Purpose
Astah Professional creates UML, ER, flowchart, and data flow diagrams to visualize software design.Read 3 Oct 2026 · astah.net
Audience
The product page describes Astah Professional as a tool for visualizing software design for individuals and teams.Read 3 Oct 2026 · astah.net
Trial
The pricing page offers a 20-day free trial for Astah Professional.Read 3 Oct 2026 · astah.net
Integrations
Listed plug-ins include Mermaid diagram import and export, Microsoft Office embedding, Redmine ticket association, and miro diagram import.Read 3 Oct 2026 · astah.net
Support
A perpetual license includes the first year of support and maintenance; continuing support and upgrades from year two require a support renewal license.Read 3 Oct 2026 · astah.net
Headquarters
Fukui City, Fukui, JapanRead 28 Sep 2026 · astah.net
Founded
2006Read 28 Sep 2026 · astah.net
AI and data handling
AI Chat Copilot connects to an external AI service and the page says Astah does not store, analyze, or train on private user data; it requires a provider API key or endpoint.Read 3 Oct 2026 · astah.net
AI limitation
The Copilot guide cautions that AI-generated results may be incomplete or inaccurate and advises users not to enter confidential or sensitive information unless permitted by organizational policy.Read 3 Oct 2026 · astah.net
API and plugins
The Astah API can retrieve model information and create or modify diagrams and models; scripts can access models through the in-app Script Editor.Read 3 Oct 2026 · astah.net
Code support
Astah supports reverse engineering of Java, C#, and C++ and code generation for PHP, SQL, and other languages.Read 3 Oct 2026 · astah.net
Data modeling
It can create ER diagrams from scratch or generate them by importing tables from an existing database, and supports SQL export and reverse engineering.Read 3 Oct 2026 · astah.net
Diagram types
It supports UML diagrams as well as ERD, DFD, flowchart, requirement diagram and table, mind map, and CRUD diagrams.Read 3 Oct 2026 · astah.net
Modeling tools
Features include auto-layout, traceability maps, project comparison and merging, map view, and state transition paths and tables.Read 3 Oct 2026 · astah.net
Platform requirements
Professional 12.0 lists Windows 11 x64, macOS 13 and later arm64, Ubuntu 24.04, and Rocky Linux 9.6 as supported platforms.Read 3 Oct 2026 · astah.net
Plugin support
The plug-in directory states that technical support is not provided for the listed plug-ins.Read 3 Oct 2026 · astah.net
Team collaboration
Team features include file locking, merging files, comparing diagrams and models, and importing other projects as read-only references.Read 3 Oct 2026 · astah.net

Plans and prices

Astah Professional Individual Perpetual License Price not published The pricing page shows “Starting at $11.99” and lists perpetual licensing; it does not show a single fixed price in the opened page text. 1 year of support included · support renewal from year 2 is $80 / €62 Read 3 Oct 2026 · astah.net

Every Astah Professional plan and price →

Strong points and limits

Strong points

  • Supports extensive UML diagram types
  • Imports database tables into ER diagrams
  • Provides code generation and reverse engineering
  • Includes model comparison and merging
  • Offers API and in-app scripting

Limits

  • No real-time collaboration
  • No model repository
  • AI Copilot requires a provider API key
  • Plug-in technical support is not provided

Who it suits

It suits individuals and teams visualizing software designs, databases, and related requirements on desktop operating systems. Developers can use its reverse-engineering, code-generation, API, and scripting features.

Verdict

Astah Professional combines broad diagram coverage with database modeling, code support, and file-based team features. It runs on Windows, macOS, and Linux, with a 20-day trial and support renewal required from the second year.

Where Specifiction places it

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