The shared canvas most product and brand teams already live in.
Open Figma
Free options · 4.8 rating
Excalidraw
A hand-drawn whiteboard for the diagram that should not look like a slide.
Free options · 4.5 rating
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Excalidraw is a collaborative whiteboard with a sketchy look: flows, architecture, the box-and-arrow before anyone opens a design file. Free to start, and honest about being a diagram rather than a brand system.
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Added 6 December 2025. Listed under Best design and prototyping tools for product teams.
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