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Jupyter vs CoCalc: catalog facts
Jupyter	CoCalc
Free Free and open source.	Freemium Hosted plans and licences are offered; see the pricing page for current terms.
Windows, macOS, Linux, Web	Web, Self-hosted
Supports over 40 programming languages Rich interactive output in notebooks	Notebooks, terminals, files and documents in one shared project Live collaborative editing with version history and recovery
Runs through a local server, which adds setup compared with a plain editor Notebook files can be awkward to diff and review in version control	Main use is through a hosted service that needs an account Claude Code support is an experimental preview
Downloadable app, Web application	Web application, Self-hosted, Hosted service
Open source	Closed source
License: BSD-3-Clause	License not stated
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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