kitio.aiAdded Oct 28, 2026
marimo
FreeReactive Python notebook stored as plain Python, with AI help
What is marimo?
marimo is an open-source reactive notebook for Python where cells rerun automatically when their inputs change. Notebooks are saved as plain Python files, so they work with Git and can run as scripts or web apps.
Because cells form a dependency graph, there is no hidden state from running cells out of order. Built-in AI can generate cells, explain code and work with your data frames, and SQL cells query databases directly. molab is the hosted version, now running on CoreWeave, which acquired marimo in 2025 and kept the project open source.
Features
- Reactive execution
- Pure Python file format
- AI code generation
- SQL cells
- Deploy as web apps
Tags
Releases
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Organization
CoreWeave
🇺🇸 United States
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Free
- Paid options from
- 100% free
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Pros and cons
Pros
- No hidden notebook state
- Git-friendly files
- Turns notebooks into apps
Cons
- Different habits than Jupyter
- Smaller extension ecosystem
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Q&A
What is marimo?
marimo is an open-source reactive notebook for Python where cells rerun automatically when their inputs change. Notebooks are saved as plain Python files, so they work with Git and can run as scripts or web apps.
How much does marimo cost?
marimo is 100% free.
Is there a free version of marimo?
Yes. marimo is completely free to use.
What are the main features of marimo?
Reactive execution, Pure Python file format, AI code generation, SQL cells, Deploy as web apps.
Who makes marimo?
marimo is made by CoreWeave.
What are the best alternatives to marimo?
Popular alternatives include Google Colab, Hex, Albumentations.