Jupyter Notebook

Judgement

What it is

Developer tool

What it does

A web-based notebook where you mix runnable code cells, output, charts and text in one document, with a Python server running the kernels.

Adopt it when

Analysts or researchers want the familiar single-document notebook interface for exploring data and sharing worked examples.

Watch out

Version 7 is rebuilt on JupyterLab and breaks extensions written for the classic v6 notebook, which now gets only security fixes.

Ready for

Production-ready

Runs as

Self-hosted server and desktop app

Built with

Python, TypeScript and JupyterLab

How established

Established: started 11 years ago, latest release v7.6.4.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Jupyter Notebook → TypeScript → Go → runs on a microchip

How compilers were built, back to punched paper tape

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