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tldraw vs Excalidraw: catalog facts
tldraw	Excalidraw
Freemium The whiteboard is free to use. The SDK requires a licence for production use.	Freemium The editor is free and open source. Excalidraw Plus is a paid subscription.
Web	Web, Self-hosted
Instant, no-signup whiteboard that feels genuinely fast The same engine is available as an embeddable SDK	The sketchy style keeps diagrams feeling provisional rather than final End-to-end encrypted collaboration rooms, and self-hostable
The SDK is source-available, not open source, and production use needs a licence Less structured than dedicated diagramming tools	Not built for precise technical diagrams Some team features belong to the paid Excalidraw Plus
Web application	Web application, Self-hosted
Closed source	Open source
License not stated	License: MIT
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 22, 2026

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