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tldrawInfiniPaint
Freemium

The whiteboard is free to use. The SDK requires a licence for production use.

 Free

Free and open source under the GPL-3.0-or-later, with optional donations.

Web Linux, Web
  • Instant, no-signup whiteboard that feels genuinely fast
  • The same engine is available as an embeddable SDK
  • Truly unlimited zoom
  • Online lobbies for collaborative drawing
  • The SDK is source-available, not open source, and production use needs a licence
  • Less structured than dedicated diagramming tools
  • Web version may contain bugs
  • Requires a WebGL2 capable browser for the online version
Web application Downloadable app, Web application
Closed source Open source
License not stated License: GPL-3.0-or-later
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked October 1, 2026

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