Cut3D
Cut3D lets you very quickly and easily create toolpaths to carve 3D parts modeled in another 3D design program. It utilizes a wizard-based interface which include options to help hold the part, allow you to cut it in slices or machine from multiple sides. Cut3D is a simple solution for cutting 3D parts on your CNC if you do not require specific 2D Toolpaths or 3D modeling and layout tools.
You can download a Free Trial version of the software from this page on the Vectric website: http://www.vectric.com/downloads/trial-software.html