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marimo vs Positron: catalog facts
marimo	Positron
Free The open-source application is available without a license fee.	Free Free to download and use.
Windows, macOS, Linux, Web	Windows, macOS, Linux
No hidden state: changing a cell updates everything that depends on it Notebooks are plain .py files, so diffs and version control work	Supports both Python and R in one IDE Data Explorer for large datasets
The reactive model forbids some patterns familiar from Jupyter Smaller ecosystem than Jupyter	Source-available under Elastic License 2.0, not open source Focused on data science rather than general development
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	License: Elastic-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.