MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
SMath Studio - Tiny, powerful, free mathematical program with WYSIWYG editor and complete units of measurements support.
GNU Octave - GNU Octave is a programming language for scientific computing.
Scilab - Scilab Official Website. Enter your search in the box aboveAbout ScilabScilab is free and open source software for numerical . Thanks for downloading Scilab!
EngineeringPaper.xyz - Online app for engineering calculations. Solves systems of equations, checks and converts units automatically, supports plotting, and allows for the creation of a link to share your work. Free and open source, no registration required.
Maxima - Maxima is a fairly complete computer algebra system written in Lisp with an emphasis on symbolic computation.