Last Updated on March 22, 2026
marimo is a reactive Python notebook: run a cell or interact with a UI element, and marimo automatically runs dependent cells (or marks them as stale), keeping code and outputs consistent.
marimo notebooks are stored as pure Python (with first-class SQL support), executable as scripts, and deployable as apps.
This is free and open source software.
Key Features
- Batteries-included: replaces jupyter, streamlit, jupytext, ipywidgets, papermill, and more.
- reactive: run a cell, and marimo reactively runs all dependent cells or marks them as stale.
- interactive: bind sliders, tables, plots, and more to Python — no callbacks required.
- git-friendly: stored as .py files.
- designed for data: query dataframes, databases, warehouses, or lakehouses with SQL, filter and search dataframes.
- AI-native: generate cells with AI tailored for data work.
- reproducible: no hidden state, deterministic execution, built-in package management.
- executable: execute as a Python script, parameterized by CLI args.
- shareable: deploy as an interactive web app or slides, run in the browser via WASM.
- reusable: import functions and classes from one notebook to another.
- testable: run pytest on notebooks.
- a modern editor: GitHub Copilot, AI assistants, vim keybindings, variable explorer, and more.
- use your favorite editor: run in VS Code or Cursor, or edit in neovim, Zed, or any other text editor.
Website: github.com/marimo-team/marimo
Support:
Developer: marimo team
License: Apache License 2.0
marimo is written in Python and TypeScript. Learn Python with our recommended free books and free tutorials. Learn TypeScript with our recommended free books and free tutorials.
Related Software
| Notebook software | |
|---|---|
| JupyterLab | The next generation user interface for Project Jupyter |
| RStudio | Integrated development environment (IDE) for R |
| Jupyter Notebook | Web-based notebook environment for interactive computing |
| Positron | Next-generation data science IDE |
| marimo | Reactive Python notebook |
| Apache Zeppelin | Multi-purpose notebook |
| IPython | Rich architecture for interactive computing |
| Polynote | Experimental polyglot notebook environment |
| nteract | Notebooks on your Desktop |
| Pluto | Simple reactive notebooks for Juli |
| Pretzel | Billed as a modern replacement for Jupyter Notebooks |
| Spark Notebook | Interactive and reactive data science using Scala and Spark |
| BeakerX | Kernels and extensions to the Jupyter interactive computing environment |
Read our verdict in the software roundup.
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