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Our free trials are fully functional for 20 days.
To purchase a fully licensed version, download and install the software from this page, then select the right type of license for you.
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Our premier product is designed to help you create UML, ER Diagram, Flowchart, and DFD … and much more!

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Lightweight UML diagramming tool with mind mapping.

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Lightweight SysML modeling tool for systems engineering.

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Goal Structuring Notation editor for system assurances.

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Free viewer to open .asta files created by Astah Pro & UML.

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Looking for the iPad friendly version of Astah? Download it now from the Apple iTunes App Store.

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Are You a Student?

GET A FREE ASTAH UML LICENSE!
Obter uma licença de estudante gratuita

If you are a student at an accredited college or university, you’re eligible for a free license for Astah UML.

Apply Here – Free for students | estudantes