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Marimo is a reactive Python notebook that eliminates the hidden state problem of Jupyter. Every cell automatically re-executes when its dependencies change, making notebooks reproducible, git-friendly, and shareable as interactive web apps or scripts. Used by data scientists and ML engineers who want notebooks that actually behave like software.
- Category
- Dev Tools
- Funding
- VC-backed
Sources, checked Sep 26, 2026. A fact that is missing is one we could not source, not a zero.
- Summary: our summary, checked against marimo.io
- Funding: news.ycombinator.com — “Marimo raises $5M”
Category is our own classification. Spotted something wrong? Tell us.
Frequently asked questions
What does Marimo do?
Marimo is a reactive Python notebook that eliminates the hidden state problem of Jupyter. Every cell automatically re-executes when its dependencies change, making notebooks reproducible, git-friendly, and shareable as interactive web apps or scripts. Used by data scientists and ML engineers who want notebooks that actually behave like software.
Where is Marimo based?
Location for Marimo has not been disclosed publicly.
How much has Marimo raised?
Marimo is vc-backed. We have not verified a funding amount.