Astah Matrix Plug-in

This enables you to display dependencies among model elements in Astah SysML, but might also work with other Astah variants as well.

Screenshot

Select model type for rows and columns
Select package for rows and columns
Select dependency type
Display dependency matrix (row to column, column to row, both)
Ability to select a single cell and highlight both row and column
Context menu support including:
- Selecting row or column element in tree
- Creating relationship between elements
- Hiding selected rows and columns
- Show all hidden rows and columns
Display elements based on stereotype
Export to CSV
Select row or column based on selected diagram element