Excalidraw is a free, open-source whiteboarding tool for sketching diagrams and flowcharts. Simple, fast, and no sign-up required. Hand-drawn aesthetic and focus on simplicity make it perfect for quick sketching.
Why we recommend it
Excalidraw is the simplest whiteboarding tool available. Perfect for quick sketches, flowcharts, and diagrams without friction.
Strengths
- Loads instantly with nothing to install
- Hand-drawn style keeps early work feeling low-fidelity
- Free and open source
Keep in mind
- Deliberately limited for polished work
How much does Excalidraw cost?
Free — Free.
List price, excluding tax. Compare prices across the directory.
Excalidraw alternatives and related tools
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Open-source scheduling infrastructure — a self-hostable Calendly alternative.
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draw.io (diagrams.net)
Diagramming for flowcharts, wireframes and architecture, with no account required.
Free
Figma FigJam
FigJam is Figma's collaborative whiteboarding space for brainstorming, ideation, and teamwork. Includes sticky notes, voting, templates, and real-time…
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