You may like to check out our PLUS 2D - Nesting and Panel optimization
The Light version should be sufficient for rectangular parts.
There is a demo available at www.nirvanatec.com/downloadcenter.html
that may be
sufficient for small problems. For large problems, it does not display
the layouts though. If it is a 1 off problem, try writing to
email@example.com with the sample data. Hope it helps.