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kepler.gl vs Felt: catalog facts
kepler.gl	Felt
Free Free and open source.	Freemium Free to start, with paid plans for teams and organisations.
Web	Web
Handles large datasets with WebGL rendering Runs in the browser with no installation	Drag-and-drop import of many file formats Automatic geocoding and boundary matching
Focused on visualization rather than editing or full GIS analysis Performance depends on the browser and GPU	Cloud only, so data is stored on Felt's servers Proprietary service
Web application	Web application
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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