Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
FreeCAD - An open-source parametric 3D modeler
SketchUp - 3D for Everyone
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Redeye Apps - A common data environment to collect, manage and share engineering information