GNU Octave - GNU Octave is a programming language for scientific computing.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
LTspice - LTspice® is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simulation of analog circuits.
Scilab - Scilab Official Website. Enter your search in the box aboveAbout ScilabScilab is free and open source software for numerical . Thanks for downloading Scilab!
MapleSim - MapleSim is an advanced system-level modeling tool that enables innovation and reduces development risk.
Maxima - Maxima is a fairly complete computer algebra system written in Lisp with an emphasis on symbolic computation.