KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
GNU Octave - GNU Octave is a programming language for scientific computing.
Altium Designer - PCB Design Software
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.