Excalidraw

Open source · OSI-approvedStatus: unknown

Collaborative whiteboard with a hand-drawn look

Excalidraw's sketchy rendering is not decoration. Diagrams that look provisional invite comment, where a crisp vector diagram signals a decision already made, so it is unusually good at the early part of a design conversation.

It opens instantly in a browser with no account, supports live collaboration through a shared link, and stores scenes end to end encrypted when collaboration is on.

Decisive facts

Sketch-style rendering with real vector output
Live multiplayer cursors over an end to end encrypted channel
Local-first: scenes persist in the browser with no account
Libraries of reusable shapes for architecture and flow diagrams
Embeddable as a React component in other applications

Design & Whiteboarding Developer Tools typescript react canvas diagrams collaboration

Alternatives to Excalidraw

Miro

Infinite whiteboard for workshops and planning

Figma

Collaborative interface design in the browser

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