Astah Professional
Astah Professional is a desktop tool for visualizing software design with diagrams and models.
What Astah Professional is
Astah Professional is a desktop tool for visualizing software design with diagrams and models. It supports UML diagrams alongside ER, data flow, flowchart, requirement, table, mind map and CRUD diagrams. Users can create ER diagrams from scratch or generate them by importing database tables, then export SQL or reverse engineer database structures. Astah also supports reverse engineering of Java, C# and C++ and code generation for PHP, SQL and other languages. Modeling tools include auto-layout, traceability maps, project comparison and merging, map view, and state transition paths and tables. Its API and in-app Script Editor can retrieve model information and create or modify diagrams and models. Listed plug-ins connect with Mermaid, Microsoft Office, Redmine and Miro; technical support is not provided for those plug-ins. AI Chat Copilot requires a provider API key or endpoint. Astah says it does not store, analyze or train on private user data, but cautions that AI output may be incomplete or inaccurate. A 20-day free trial is listed. The pricing facts conflict on the starting amount: one lists paid plans from $6.99/mo and another lists $11.99/user/mo.
Good
- Supports a wide range of UML and other diagram types.
- Can reverse engineer Java, C# and C++.
- Includes SQL export and database reverse engineering.
- Team tools include file locking and project merging.
- A 20-day free trial is listed.
Watch out
- Real-time collaboration is not available.
- No model repository is listed.
- Plug-ins do not include technical support.
- AI-generated results may be incomplete or inaccurate.
Who it suits
Astah Professional may suit individuals or teams visualizing software design through diagrams, database models and code-related workflows. It supports Windows, macOS and Linux.
Verdict
Astah Professional offers extensive diagramming, data modeling and code support across desktop platforms. Check the pricing details and support renewal terms, and take care with sensitive information when using the AI Copilot.
Plans and prices
From Astah Professional's own pricing page, checked 3 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Astah Professional Individual Perpetual License | — | 1 year of support included · support renewal from year 2 is $80 / €62 · 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. |
The facts
Each one read from Astah Professional's own pages, with the date it was checked.
What it does
- 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.checked 3 Oct 2026
- 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.checked 3 Oct 2026
- 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.checked 3 Oct 2026
- Audience
- The product page describes Astah Professional as a tool for visualizing software design for individuals and teams.checked 3 Oct 2026
- Code support
- Astah supports reverse engineering of Java, C#, and C++ and code generation for PHP, SQL, and other languages.checked 3 Oct 2026
- 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.checked 3 Oct 2026
- Diagram types
- It supports UML diagrams as well as ERD, DFD, flowchart, requirement diagram and table, mind map, and CRUD diagrams.checked 3 Oct 2026
- Integrations
- Listed plug-ins include Mermaid diagram import and export, Microsoft Office embedding, Redmine ticket association, and miro diagram import.checked 3 Oct 2026
- Modeling tools
- Features include auto-layout, traceability maps, project comparison and merging, map view, and state transition paths and tables.checked 3 Oct 2026
- Plugin support
- The plug-in directory states that technical support is not provided for the listed plug-ins.checked 3 Oct 2026
- Purpose
- Astah Professional creates UML, ER, flowchart, and data flow diagrams to visualize software design.checked 3 Oct 2026
- Support
- A perpetual license includes the first year of support and maintenance; continuing support and upgrades from year two require a support renewal license.checked 3 Oct 2026
The company
- Founded
- 2006checked 28 Sep 2026
- Headquarters
- Fukui City, Fukui, Japanchecked 28 Sep 2026
- Team collaboration
- Team features include file locking, merging files, comparing diagrams and models, and importing other projects as read-only references.checked 3 Oct 2026
Where it runs
- 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.checked 3 Oct 2026
Money
- Trial
- The pricing page offers a 20-day free trial for Astah Professional.checked 3 Oct 2026
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