Compare software

Astah ProfessionalVisual Paradigm
Paid

Commercial license with a free trial and student options.

 Freemium

Paid editions with a free trial; some tools such as the VPasCode online editor are free.

macOS macOS, Web
  • UML, ERD, DFD and flowcharts in one tool
  • API and free plugins for customisation
  • Covers UML, SysML, BPMN and enterprise architecture in one tool
  • Desktop and browser versions
  • Paid license after the trial
  • Focused on software modelling rather than general diagramming
  • Broad feature set takes time to learn
  • Full features require a paid edition
Downloadable app Downloadable app, Web application
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

Checked October 2, 2026

Checked October 2, 2026

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