wireframe complex (expandable) grids

Question

Is it possible to wire frame a grid with expanded rows like this:

Telerik example

Balsamic looks interesting but I am not sure whether it can be used for complex scenarios like the one above.

Ideally, I am looking for something free. Currently, I am using Pencil, which is great but the achievable grids/tables are very basic - especially if you want to use many columns.

Answer 1

Balsamiq offers 'Mockups To Go', which to my understanding allows users to combine building block mockups. An example of an expandable wire frame grid can be found here:

Master Detail Grid - Balsamic Mockup

Answer 2

Check this thread.

More complete list of mockup tools is here.

And people do create such complex layouts with my own tool MockupScreens.