Is it possible to wire frame a grid with expanded rows like this:
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.
On
Check this thread.
More complete list of mockup tools is here.
And people do create such complex layouts with my own tool MockupScreens.
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