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OpenBoard vs tldraw: catalog facts
OpenBoard	tldraw
Free The open-source software is available without a license fee. Hosting, hardware and…	Freemium The whiteboard is free to use. The SDK requires a licence for production use.
Windows, macOS, Linux	Web
Provides classroom-oriented drawing and presentation tools.	Instant, no-signup whiteboard that feels genuinely fast The same engine is available as an embeddable SDK
Official Linux packages target Debian, with other distributions relying on community builds.	The SDK is source-available, not open source, and production use needs a licence Less structured than dedicated diagramming tools
Downloadable app	Web application
Open source	Closed source
License: GPL-3.0	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 September 22, 2026

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