tldraw

tldraw is a slick, open-source infinite canvas that's become a developer favourite — both as a no-login whiteboard and as an SDK for building canvas features into other apps. It's fast, clean, and has pioneered AI-on-canvas experiments. Great for quick diagrams and for teams that want to embed a whiteboard in their own product.

The best pick for developers and builders. It's a clean free whiteboard on its own, and a genuinely good SDK if you want to embed a canvas.

Every place tldraw shows up across Choose My Stack — the research it’s part of and the articles that cover it.

The honest list