Developer & DevOps

Marimo

Mark

21 Oct 2025 • 1 min read

Marimo is an open-source, reactive Python notebook that stores notebooks as git-friendly .py programs and turns them into reproducible, interactive data apps. It provides reactive execution to keep notebooks consistent, and it can run locally or entirely in the browser via WebAssembly, with notebooks publishable as static sites.

It targets individual data scientists, small data teams, and leaders needing data control and EU residency options. Marimo addresses notebook reproducibility and state drift, JSON-versioning pain, the gap from exploration to production, lightweight shareable analytics, and simple SQL-driven analysis.

Use Cases

Prototype reproducible analyses with reactive cells and deterministic execution.
Version-control notebooks as .py files for code review workflows.
Publish lightweight analytics apps as static sites or web apps.
Run notebooks fully in-browser for data-residency sensitive projects.
Convert exploration into scripts for production deployment or CI.

Strengths

Reactive execution auto-updates dependent cells for consistent results.
Notebooks saved as plain .py files for git, tests, imports.
Deploy as web apps or run as scripts; flexible runtimes.
Browser execution via WebAssembly/Pyodide avoids backend for simple sharing.
Built-in SQL cells, plotting, and interactive UI components.
Publish static sites (e.g., GitHub Pages) for easy sharing.
Open-source and Python-first, aligning with engineering workflows.
Self-hosting works well on Coolify for local control.

Limitations

Managed collaboration features differ from Deepnote and Hex.
Marimo is not an app framework like Streamlit.
Latest version and release date marked Unverified in summary.

Final Thoughts

Try Marimo now if you need reproducible, git-friendly notebooks and easy app publishing. Wait if you require managed, cloud-hosted collaboration and vendor SLAs.

Use a managed cloud when you need centralized hosting, hosted compute, or integrated team collaboration. Marimo instead favors local, browser, self-hosted control, or static publishing.