Astah Professional
Total software design tool with UML, ERD, Flowchart, DFD..etc.

Astah UML
Lightweight UML diagramming tool with Mind Mapping abilities.

Astah Viewer
Free viewer to open .asta files created by Astah Pro and UML.

Astah System Safety
New modeling tool for safety-critical systems.

Astah SysML
Lightweight SysML modeling tool for systems engineering.

Astah GSN
GSN (Goal Structuring Notation) editor for System assuarances.