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Astah UML vs Astah Professional: catalog facts
Astah UML	Astah Professional
Paid Paid license with a free trial and student options.	Paid Commercial license with a free trial and student options.
macOS	macOS
Focused on UML without extra complexity Mind mapping included	UML, ERD, DFD and flowcharts in one tool API and free plugins for customisation
Paid after the trial SysML and other modeling require separate editions	Paid license after the trial Focused on software modelling rather than general diagramming
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.