LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
GNU Octave - GNU Octave is a programming language for scientific computing.
FreeCAD - An open-source parametric 3D modeler
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.