Download and Install Astah

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

About Java

• Installers for Windows and Mac OS have required JRE included.
• Linux users need to set up required Java by yourself by following the instruction.

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].

Set License

When license is not set up yet, a license dialog appears. This is a same dialog that opens from [Help] - [License] menu. Free 14day-trial is included at the first installment. Once first 14days is over, please purchase license.