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Data science tools

marimo

A Python notebook for data work that keeps results up to date automatically and has AI help built in.

What it does

A notebook is a document that mixes code, results, charts and notes, popular for data analysis and machine learning. In marimo, when you change one piece of code, everything that depends on it updates automatically, so results never go out of date.

You can add sliders, tables and charts, query data with SQL, and share a notebook as an interactive web app or slides. Notebooks are saved as plain Python files, which makes them easy to track and reuse.

Its editor includes AI features such as code completion and AI assistants, and it can pair with AI coding agents like Claude Code. There is also a free online version.

Who it's for

Data scientists, researchers and Python developers who analyse data or experiment with machine learning.

Can I use it without coding?

Developers only. Installed with one Python command; using it means writing Python code. New to this? Start here.

Can I run it?

Cost
FreeNothing to pay or sign up for.
Runs on
Web browser
Privacy
Your choice: run it on your device or use an online service
API key
Not needed

Try it

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • License (Apache-2.0): Permissive: free to use, change and share, including for business.
  • More on staying safe

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