Astah Professional
Astah Professional: A broad desktop modeling suite for software engineering, with one-editor licensing. Ranked #23 of 36 in Diagram Software by our editors (6.9/10); pricing: 20-day trial; best for software teams needing UML and code engineering.
At a glance
- Editor score6.9 / 10
- Pricing20-day trial
- Best forSoftware teams needing UML and code engineering
- Free planNo
- Paid from$129.99/user/yr
- Real-time collaborationNo
- Founded2006 · Tokyo, Japan
- Facts checked20 Sep 2026
Where it wins
- Supports UML, ER, flowcharts, requirements, CRUD, and traceability maps
- Includes Java, C#, and C++ reverse engineering plus PHP and SQL generation
- Runs on Windows, macOS, and Linux with API, plug-ins, and AI features
Where it doesn't
- No free plan; paid access starts at $11.99 per user per month
- Licensing is limited to one editor
- Collaboration is file and project-based rather than live simultaneous editing
Our verdict on Astah Professional
Astah Professional is desktop modeling software for software developers, system designers, technical architects, and engineering teams. Its scope extends from UML to entity-relationship diagrams, flowcharts, data flow diagrams, requirements diagrams, mind maps, CRUD diagrams, and traceability maps. It also supports project comparison and merging, database table import, image export, Microsoft Office copy/paste, scripting, and plug-ins. Windows, macOS, and Linux support gives teams flexibility across desktop environments.
The published monthly plan costs $11.99 per user per month and provides full access to Astah Professional, with an auto-renewal option. There is no free plan, while a 20-day trial provides a way to assess the application before subscribing. The one-editor limit makes the pricing easier to evaluate for individual practitioners, but less suitable for teams that need several people editing models at once. Teams seeking live simultaneous collaboration should consider a product designed around shared real-time workspaces instead.
Astah Professional stands out when diagramming is closely connected to software engineering. Java, C#, and C++ reverse engineering can connect source code to models, while PHP and SQL code generation extends models toward implementation. AI Chat Copilot, AI Code Reverse, and MCP connectivity add newer workflow options, and the Astah API, plug-ins, and Microsoft Office integration support extension and document sharing. Choose it for broad desktop modeling, code-oriented workflows, and multiple diagram types; choose an alternative if browser-first collaboration or multi-editor work is central.
Your product? Our editors can test Astah Professional in depth and publish a review, labelled as paid · from $149/mo →
Astah Professional pricing
All 3 Astah Professional plans and prices →
Astah Professional fact sheet
| Free plan | No |
|---|---|
| Paid from | $129.99/user/yr |
| Diagram types | Class, object, communication, timing, component, deployment, composite structure, use case, sequence, activity, statemachine, package, requirement, mind map, ER, flowchart, CRUD, data flow, traceability map, Eriksson-Penker process |
| Real-time collaboration | No |
| Export formats | JPEG, PNG, EMF, SVG, RTF, HTML, CSV, XML, CMOF |
| Import formats | Excel, XML |
| Desktop app | Yes |
| Version history | No |
| Maximum editors | Not verified |
| Free trial | 20 days |
| Deployment | Desktop |
| Platforms | Windows, macOS, Linux |
| Support | Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 3 integrations: Plug-ins, API, Microsoft Office See all → |
| Pricing | 20-day trial (source) |
| Website | astah.net |
| Facts checked | 20 Sep 2026 |
Astah Professional integrations
Astah Professional lists 3 integrations on its own site.
- Plug-ins
- API
- Microsoft Office
See all Astah Professional integrations →
Alternatives to Astah Professional
- draw.ioA broad, flexible diagramming editor for teams that want free cross-platform coverage.9.4
- Visual ParadigmA broad modeling suite with collaboration, engineering tools, and a free plan.9.2
- LucidchartA broad, collaborative diagramming workspace with a free tier and web-only access.9.0
See all Astah Professional alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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