nteract is described as 'desktop application that allows you to develop rich documents that contain prose, executable code (in almost any language!), and images. nteract helps you write your next code-driven story' and is an app in the Development category. There are more than 10 alternatives to nteract for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Self-Hosted solutions. The best alternative is GNU Octave, which is both free and Open Source. Other great apps like nteract are Jupyter (Free, Open Source), IPython (Free, Open Source), Beaker (Free, Open Source) and Polynote (Free, Open Source).