Astah is a modeling tool
Develop and Explore your designs
Astah’s best-in-class modeling software packages are the perfect tools for modeling, visualizing designs, achieving safe and secure systems. They allow you to communicate with your team and stakeholders such as your clients or electrical engineers to build better communications more efficiently.
Our suite of tools provide a complete solution for individual developers, engineering teams, and technical architects. When you use Astah’s tools to build requirements and architecture, your development efforts will be more efficient and streamlined.
UML Diagrams
ER Diagrams, Flowcharts, Data Flow Diagram
SysML Diagrams
SysML diagrams, STAMP/STPA, ASAM SCDL and GSN included. XMI import/export is supported.
GSN (Goal Structuring Notation)
STAMP/STPA and ASAM SCDL
STAMP/STPA, ASAM SCDL, SysML diagrams and GSN (Goal Structuring Notation) all in one tool.
Can’t decide?
There’s an Astah product right for you. Our comparison chart will help you select the one that best meets your needs.
Compare our productsPackages & Special Offers
Get a great package discount when you buy an individual license that covers our three most popular products.
University faculty members can receive a discounted department-wide license for our four most popular products.
Students and faculty members receive a discount on individual Astah Pro licenses when used for instructional purposes.
Students with a valid college or university email can use the powerful Astah UML edition free for personal use.
Looking for our free Community edition?
Astah Community edition is no longer available, but we have options that may better suit your needs.