Mathematica, PyCharm, Maple, Scilab, RStudio, Anaconda, GNU Octave, Jupyter, Ascend, SageMath, IPython, wxMaxima, Livebook, Mirai Math, jasymca, OpenModelica, fxSolver, Dymola, Polynote, Freemat, Magma, SimulationX, PyDSTool, ScicosLab, DataJoy, MathJournal, Reinteract, Doronix Math Toolbox are some alternatives to Spyder.