PTC Mathcad, Mathematica, MATLAB, Maple, GNU Octave, Derive, Maxima, Ascend, SageMath, OpenAxiom, Mirai Math, Spyder, fxSolver, SymPy, Calcpad, MathStudio, Magma, FriCAS, VisSim, Cadabra, GiNaC, Function Analyzer, Yacas, MathJournal, nerdamer, Doronix Math Toolbox, FormulaDesk Math, GAP, SymbolicC++ are some alternatives to WxMaxima.