Be more productive with Astah

Astah helps you visualize software designs with UML diagrams, brainstorm ideas with mind maps, represents interactions between system and components with SysML diagrams, graphically represent processes with Flowcharts, structure arguments in a standardized, recognizable format with GSN and more. Start Astah, the best modeling tools for your daily job.

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Select the Right Astah for You

You can try out all the editions for free.


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Astah in Action

A few years ago I was looking for a tool to help me to draw UML diagrams. When I was in college, my teachers recommended enterprise platforms, but I was looking for a faster and simpler tool. Then I found Astah, and it was exactly what I wanted. Astah is cross-platform, which enables me to use it both on my Linux and Windows, and this has helped me a lot!

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Individual Licensing Options

Starting at
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Starting at
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Annual Subscription- $550
Annual Subscription- €480
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Annual Subscription – $140
Annual Subscription – €120
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  • Astah Professional Perpetual License includes 1 year of support and renewal cost from the 2nd year is only for $80 / €62.
  • Monthly licenses are currently unavailable for Astah SysML and Astah System Safety. If you’re interested in a monthly or custom-duration license for these products, please contact us to discuss potential arrangements.
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Try Astah for Free

Our free trials are fully functional. Experience the power of Astah for yourself!

You can uninstall Astah product(s) when you decided not to purchase a license after your evaluation is over. Here’s the instruction for uninstalling Astah.