Astah User Guide

Start Astah and set a license

Download and Install Astah

Download Astah from our Download page.
If you are a student, fill the form to get a free student license.

About Java



Start Astah

You can launch Astah by:

  • Choosing [Astah] from Start menu or
  • Double-clicking Astah's app icon or .asta file

When launching Astah, it automatically looks for new updates through HTTP access and shows a dialogue if newer version is available.
If you wish not to check for updates, change option from [Tools] - [System Properties] - [Other].

astah system properties

Set License

When license is not set up yet, a license dialog appears. You can open this from [Help] - [License]. If you have a floating license, click [Set Floating License]. For further steps, please read the floating license guide.

If you have non-floating license, click [Set License key] and specify your license file (.xml).
astah license
Free 14day-trial is included at the first installment. Once first 14days is over, please purchase license.