Jupyter - Project Jupyter exists to develop open-source software, open-standards, and services for interactive computing across dozens of programming languages. Ready to get started? Try it in your browser Install the Notebook.
Kajero - Interactive JavaScript notebooks - create good-looking, responsive, interactive documents.
Boostnote - Boostnote is an open-source note-taking app.
BeakerX - Open Source Polyglot Data Science Tool
iPython - iPython provides a rich toolkit to help you make the most out of using Python interactively.
Zoho Notebook - The most beautiful note-taking app across devices.