Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.
FreeCAD - An open-source parametric 3D modeler
Maxima - Maxima is a fairly complete computer algebra system written in Lisp with an emphasis on symbolic computation.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Inventor - Inventor is a 3D CAD software that lets you quickly create 3D models with embedded intelligence, intuitive workflows, and optimized performance.