Tldraw

Tldraw is an open-source SDK for building infinite canvas applications in React. It provides a feature-rich, highly extensible canvas engine designed for whiteboarding, diagramming, visual collaboration, and custom canvas-based apps. Key features include multiplayer real-time collaboration, pressure-sensitive drawing, custom shapes/tools, AI integrations, and broad device/browser compatibility. Tldraw is ideal for developers and companies creating collaborative visual apps, diagramming tools, or no-code platforms.