The power of visual communication

Astah’s modeling tools allow you to visualize the essence of your ideas and software designs. Quickly and effortlessly build diagrams that create a clear understanding among teams.
Build UML, ER diagrams, Data Flow Diagrams, Flowcharts, mind maps and more in the most powerful modeling software for everyone from students to enterprise teams.

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2020 STAMP Workshop begins July 20!

The 2020 Virtual STAMP Workshop begins July 20. Sessions will run to Aug 7.
The Workshop will start with short tutorials to introduce STAMP, STPA, CAST, and related techniques.

Astah’s new edition “Astah System Safety”, a commercial version of STAMP Workbench
listed as STAMP-based support tool, is now free to use for your practice along with the sessions!

simplicity
Easy to use
abundant online content
Abundant online content
extensive add-on library
Extensive add-on library

Astah advantages

Simplicity, quality, and community are what set Astah apart.
For more than a decade, we’ve been committed to creating software modeling tools with our customers in mind. Our extensive add-on library allows you to tailor Astah to your needs, and our abundant online content means you can easily find everything you need to start diagramming today!

Explore our products

Diagramming tool for individuals & teams of all sizes

Astah’s tools allow you to create a wide variety of diagrams and offer flexible pricing based on your needs. Whether you’re a student just starting out, part of an enterprise-wide development team, or an academic faculty member, we have a package that is right for you!

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Unleash your full potential

Astah offers a variety of tools so you can select what’s right for you.

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Trusted & Used Worldwide

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Try Astah for Free

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