Support during the COVID-19 pandemic

As more employees and students work remotely in response to the spread of COVID-19, our way of working is changing dynamically and rapidly.

We want to help all the engineers who have difficulties in this challenging time. So we’ve decided to provide Astah Pro, SysML and GSN for free.

Download Free License

“Stay Home, Enjoy Modeling”

– Message from CTO, Kenji Hiranabe

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Available Products

Total software design tool with UML, ERD, Flowchart, DFD, etc.

Learn More

Lightweight SysML modeling tool for systems engineering.

Learn More

GSN (Goal Structuring Notation) editor for system assurances.

Learn More
Astah Professional
for UML and ER diagrams
Astah SysML
Astah SysML
for SysML diagrams
Astah GSN
for GSN diagrams

Get it started!

We provide a free license you can use our three products – Astah Pro, SysML and GSN with until May 31st, 2020.
No limitation on the usage, so you can use it for your studies, personal, and any commercial projects.

Download Free License File
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How to use

  1. Download the product you want to use.
  2. Download license file, unzip and save as astah_engineering_license.xml.
  3. Launch Astah and set license from [Set License Key]. (This dialogue opens from [Help] or [Tools] – [License] on the tool menu.)
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Help Resource

If this is your first time using Astah or you’d like to know what you can do with Astah, please take a look at our Support page.

Be productive, collaborative, and creative

by leveraging power of modeling and go through this crisis together.
– Astah Team