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tldraw vs Ziteboard: catalog facts
tldraw	Ziteboard
Freemium The whiteboard is free to use. The SDK requires a licence for production use.	Free Drawing can start straight from the homepage; the page excerpt does not detail paid plans.
Web	Android, Web
Instant, no-signup whiteboard that feels genuinely fast The same engine is available as an embeddable SDK	Infinite zoomable canvas Real-time collaboration on any device
The SDK is source-available, not open source, and production use needs a licence Less structured than dedicated diagramming tools	Pricing and plan limits are not clear from the homepage Browser-based, so it depends on a network connection
Web application	Downloadable app, Web application
Closed 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	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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