Excalidraw
FreemiumVirtual whiteboard for sketching hand-drawn like diagrams
About Excalidraw
Excalidraw is a virtual whiteboard with a hand-drawn aesthetic that has become the default tool for system architecture diagrams, wireframes, and collaborative technical sketching. No account required — open the web app and start drawing immediately. End-to-end encrypted collaboration rooms let you share a link and sketch together in real time. The hand-drawn style is a feature, not a limitation: diagrams look informal and obviously in-progress, which reduces friction in technical planning discussions compared to polished Lucidchart output. Around 80,000 GitHub stars, making it one of the most-starred tools in this list. The library ecosystem includes AWS architecture icons, flowchart elements, and UI wireframe components. The main limitation: there is no persistent workspace by default — rooms expire and diagrams live in browser storage unless you save files manually or run the self-hosted Excalidraw Plus backend. Embedding in Notion, Obsidian, and Confluence works via plugins. The self-hosted version keeps all data off external servers.
Key Features
Pricing Plans
Free
- Unlimited drawings
- Real-time collaboration
- End-to-end encryption
- Export to PNG/SVG
Excalidraw+
- Cloud storage
- Shareable links
- Team workspaces
- Custom libraries
Pros
- Beautiful hand-drawn aesthetic
- E2E encrypted by default
- Completely free for core features
- Massive community and library ecosystem
Cons
- Limited to whiteboard use case (not full design tool)
- No built-in presentation mode
- Cloud storage requires paid plan
Best For
- Engineers sketching system architecture during planning sessions without login friction
- Teams doing rapid collaborative wireframing without needing Figma or Miro accounts
- Anyone who needs a shared whiteboard that external guests can join without an account
Not Ideal For
- Teams needing persistent organized diagram workspaces — use Miro or Lucidchart instead
- Polished presentation-ready diagrams where the hand-drawn aesthetic does not fit the context
Potential Deal Breakers
- No persistent workspace by default — rooms expire and diagrams live in browser storage
- Self-hosted collaborative rooms require separate backend setup beyond the static app
- No version history or organized diagram library management
Data & Privacy
Open-source whiteboard. End-to-end encrypted collaboration. Self-hostable. No data stored on servers in default mode. Drawings processed in browser. No telemetry.
Who Is This For?
Hands-on tested May 2026
Signup Experience
No signup required. Open the site and start drawing instantly. Excalidraw+ accounts add persistence and team libraries but are completely optional.
For Home Users
The fastest way to sketch an idea and share it. The hand-drawn style makes rough diagrams feel intentional rather than unfinished. Collaboration via shared link works without accounts.
For Business Users
Excalidraw+ adds persistent boards, team libraries, and private sharing for teams. The aesthetic works well for workshops and brainstorming sessions where formal diagram tools feel too rigid.
Our Verdict
Excalidraw has found a specific niche and owns it completely. The hand-drawn style is disarming in technical conversations, and zero-friction start means it actually gets used when other tools do not. The lack of persistence out of the box is the main annoyance — the self-hosted backend fixes it but requires real setup work.