FRANC2D is a two dimensional, finite element based program for simulating curvilinear crack propagation in planar (plane stress, plane strain, and axisymmetric) structures. CASCA is a simple pre-processor for FRANC2D. Other 2D finite element programs can be used as a pre-processor for FRANC2D provided the data can be converted to FRANC2D input. We have some translators available that will convert commercial 2D finite element data to FRANC2D input.