5 free sites

Free Diagramming & Whiteboards

5 free sites in Diagramming & Whiteboards. Every one was opened and checked before it went on the list.

Excalidraw excalidraw.com Top pick
An infinite whiteboard for sketching diagrams and wireframes in a deliberately hand-drawn style, with live multiplayer collaboration.
tldraw tldraw.com Top pick
A free, open-source infinite canvas for sketching diagrams and wireframes, with real-time multiplayer and easy embedding.
Witeboard witeboard.com Top pick
A shared whiteboard that opens instantly at a URL with no signup. Draw, then send the link to whoever needs to see it.
draw.io drawio.com
Free, open-source diagram editor for flowcharts, org charts and network maps. Runs in the browser or as a desktop app, and your files stay where you save them.
Napkin AI napkin.ai
Turns a block of text into diagrams, flowcharts, mind maps and charts you can edit. Free to start.