Astah UML is Perfect if you want...

UML 2.x diagrams

Faster to create UML than Excel or non-UML-specific drawing tools.

Source Code Integration

Reverse Engineering and Source Code Generation supported.★Learn more

API & Plugins

Everyone has different design process. You can add features with Plug-ins.

Team Development

Merge, exclusive control, copy & paste supported. If you want more, go Pro.

Subscription

Purchase will be available in Sep with Annual and Monthly subscriptions.

Free for Studies

Students are absolutely free for their personal studies. ★ Get Free License

What are the differences between UML and Pro?

Astah Pro is a more powerful tool for designing software and includes all the features that Astah UML has.

Advantages with Astah Pro

ER Diagram

ER Diagram support with IDEF1X and IE notations. DB reverse and SQL Export supported. ▶ Learn More

Flowchart

Draw process, system flow or anything. You can add customized shapes and export to image files.

Requirement Diagram

Visualize requirements and functional requirements, all the relations between them and to other model elements.

Visio-like Presentation

You can upload images to associate with Stereotype, and switch objects in those images for your presenstaion.

Compare Diagrams

You can graphically compare diagrams. Conflict tree and list are also supported. ▶ Learn More

Collaborative Modeling

Import projects that other team members are working as read-only. Effective for large-scaled development.

Multi-language Support

Let each model have dual names - English & Portuguese, German...etc. Smart way for offshore development.

Perpetual License

Perpetual license is available only for Pro. If you want to use Astah for a long term, get a pro perpetual license.

Unlimited Installations

You need one license per machine with subscription license. If you want to use at home and work, go perpetual.