Excalidraw
Free, open-source hand-drawn-style diagramming that developers love
At a glance
Developers and technical teams sketching quick diagrams and architecture
Our take
Excalidraw’s signature hand-drawn aesthetic makes even rough sketches look intentional, and its speed and simplicity have made it a favorite for developers documenting architecture diagrams or explaining a concept mid-conversation. We think its biggest strength is being genuinely free and open-source with no forced sign-up for basic use — you can start drawing instantly in a browser tab. It lacks the structured templates, workshop facilitation tools, and enterprise features of Miro or Whimsical, so it’s better suited to quick, informal diagrams than formal design deliverables.
Key features
- ✓Hand-drawn-style sketching aesthetic
- ✓Real-time collaboration via shareable link
- ✓Self-hostable, open-source codebase
- ✓Libraries of reusable shapes and icons
- ✓Export to SVG, PNG, or embeddable link
What we like
- ✓Completely free and open-source
- ✓Extremely fast, no-friction start
- ✓Great for technical diagrams and documentation
- ✓Self-hosting option for privacy
What could be better
- ✗Lacks formal templates and workshop tools
- ✗No built-in video or facilitation features
- ✗Less suited to polished client-facing deliverables
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