Gridgen version 15.06 CFD meshing software features a port to the Mac OS X operating system and a capability for mesh extrusion techniques. Mac OS X and Xserve provide a productive environment to handle the compute-intensive tasks and support workgroup data needs. The software also features an extension of the extrusion techniques for generating prism and hex layers. Complex surface mesh topologies consisting of structured (quad) and unstructured (tri) surface meshes can be extruded simultaneously into hexes and prisms. Also, existing surface grids are used as the boundary condition for a new extrusion. Adjacent extrusions can differ in height, but still match point-to-point along their common boundary.