MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
GNU Octave - GNU Octave is a programming language for scientific computing.
Sketch - Professional digital design for Mac.
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.
Adobe Illustrator CC - Adobe Illustrator CC is a commercial vector graphics editor.