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uMap vs geojson.io: catalog facts
uMap	geojson.io
Free Free and open source, with free public instances.	Free Free to use in the browser.
Web, Self-hosted	Web
No coding needed to build and embed a map Several public instances run by OpenStreetMap chapters	Draw and edit map features directly in the browser Converts map data between formats
Limited to OpenStreetMap-style background layers Some community resources are in French	Suited to small datasets rather than full GIS work
Web application, Self-hosted	Web application
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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