The power of software modeling
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.
Our new MBSE tool available for free trial
You can use SysML, STPA, SCDL, and GSN all in one tool.
A free trial is now available.
New version 8.3 is now available
We just released a new version of Astah Professional, UML, and Viewer – version 8.3.
Update to the latest version to make the best out of Astah!
New filter in tree
You can filter the tree view by keyword and model types. This gets you to access the model you want faster than ever.
Enhanced Auto-diagram creation
Now you can auto-generate a class diagram for an entire set of packages you import.
This helps you to grasp the model structure through a clear and detailed diagram you create with fewer clicks.
SVG in diagrams
Now you can use SVG image files for:
– inserting directly into diagrams
– stereotype icons
– Flowsymbols in Flowcharts
More customizable Line Jumps
You can choose the line jump style between Arc and Gap that will fit your diagrams better.
Also, you can turn on/off the line jump for each line individually from its pop-up menu.
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!
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!
University faculty
Real-world diagramming tools in your classroom
Students
Free student licenses to jump start your career
Individuals
Brainstorm, visualize and communicate your ideas
Development teams
Team communication and collaboration for the enterprise
Unleash your full potential
Astah offers a variety of tools so you can select what’s right for you.
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Try Astah for Free
Our free trials are fully functional. Experience the power of Astah for yourself!