diagram-design vs ExcaliClaw: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of diagram-design and ExcaliClaw — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
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diagram-design
Cathryn Lavery
Open-source agent skill that draws editorial diagrams as a single self-contained HTML and SVG file, in your brand's style.
Key features
- 45 Diagram Types: Architecture, quadrant, sequence and many other diagram types chosen by the agent from a plain-language request.
- Self-Contained Output: Each diagram is one HTML file with inline SVG that opens with a double-click and needs no build step.
- Brand Onboarding: Point it at a website and it pulls your palette and fonts so every later diagram matches.
- Import From Other Tools: Convert existing draw.io, Mermaid or Excalidraw diagrams into the editorial style.
- Export to PNG and SVG: Export commands produce images for docs and slides.
- Cross-Agent Support: Installs into Cursor, Claude Code, Codex, GitHub Copilot, Gemini CLI, Cline, Windsurf and Amp via the skills CLI.
Best for
- Architecture Documentation: Generating a frontend, backend, database and cache diagram for a README or design doc.
- Project Prioritisation: Drawing an impact versus effort quadrant of upcoming projects.
- API Flow Explanation: Producing a sequence diagram of a token refresh on 401 for developer docs.
- Brand-Consistent Visuals: Keeping all technical diagrams in the company's colours and fonts.
- Migrating Old Diagrams: Restyling Mermaid or draw.io diagrams into a cleaner editorial look.
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ExcaliClaw
ExcaliClaw
Browser-based collaborative workspace for hand-drawn diagrams with MCP tools so AI agents like Claude and Cursor can draw with you.
Key features
- Persistent Storage: Every drawing is saved automatically.
- Collections and Search: Organize drawings into folders and search across all of them instantly.
- Real-Time Collaboration: Share a link and draw together with live cursors.
- MCP Tools for AI Agents: Let Claude, Cursor, VS Code and other agents draw and edit diagrams with you.
- Flexible Sharing: Share drawings by public link or by username.
- Import and Export: Export everything to JSON and import drawings from other tools such as Miro.
Best for
- AI-Assisted Diagramming: Ask an agent in Claude or Cursor to sketch an architecture diagram.
- Team Whiteboarding: Brainstorm with teammates in real time on a shared canvas.
- Engineering Documentation: Keep flowcharts and ER diagrams organized in searchable collections.
- Diagram Migration: Import existing drawings from Miro or JSON exports.
- Client Sharing: Send a public link to a diagram for review.