Mathematica, Scilab, RStudio, GNU Octave, Databricks, Deepnote, SageMath, Apache Zeppelin, IPython, Livebook, Colaboratory, Spyder, Nodebook, Calcpad, Tinkerwell, Jupyterlab, Observable Notebooks, Polynote, Kajero, SQL Notebook, glot.io, Notebook Viewer Jupyter Notebooks, DataSpell, Hyperdeck, Bl.ocks, Data-Forge Notebook are some alternatives to Jupyter.