tldraw

tldraw is a delightful, open-source whiteboard and infinite-canvas tool for sketching diagrams, wireframes, and ideas, known for its smooth, polished experience and for being available as an SDK that developers can embed in their own products. Whiteboarding and diagramming are essential for thinking and communicating visually, and tldraw makes them genuinely pleasant with a fast, well-crafted canvas. Beyond being a great whiteboard in its own right, it's notable for letting developers build the same canvas experience into their own applications, which has made it influential in the world of visual and collaborative tools.

As a whiteboard, tldraw offers an infinite canvas where you can draw shapes, arrows, text, and freehand sketches, create diagrams and wireframes, and collaborate, all with a smooth, intuitive feel that's a joy to use. It's free and open source, so anyone can use it and developers can inspect and build on it. Its developer SDK is a standout: it lets teams embed a high-quality canvas and whiteboard into their own apps, saving them from building complex canvas functionality from scratch. tldraw has also explored AI-on-canvas experiences, pushing the boundaries of what a visual tool can do.

tldraw is used by individuals and teams who want a delightful whiteboard for sketching and diagramming, and by developers who want to embed a polished canvas experience into their own products. The value is a great visual tool plus reusable canvas technology: as a whiteboard it's free, smooth, and pleasant for thinking and collaborating visually; as an SDK it saves developers enormous effort by providing a ready-made, high-quality canvas to build on. For the many apps that need infinite-canvas or whiteboard functionality, this is genuinely valuable. Whether you want a lovely whiteboard or the building blocks for visual features in your own app, tldraw offers an open, polished, and increasingly influential solution.