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ExcalidrawCommunicate & Collaborate

STOA rating

7.0 / 10

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Free plan availableFree plan

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Excalidraw is a free, open-source virtual whiteboard with hand-drawn-style diagrams. Lo-fi aesthetic encourages quick brainstorming. Library feature for reusable components. Integrates with VS Code, Obsidian, and Notion. Real-time collaboration with end-to-end encryption. Completely free. Excalidraw+ (hosted collaboration) from $7/month per editor.

Strengths

Completely free core product with no feature limits
Simple and fast — almost no learning curve
Real-time collaboration with end-to-end encryption
Works inside tools you already use like Notion, Obsidian, and VS Code
Open-source with an active community

Weaknesses

Limited templates and shape libraries compared to competitors
Not ideal for polished, professional-looking diagrams
Excalidraw+ hosted plan required for easy persistent team collaboration
Lacks advanced features like flowchart automation or data linking

Key features

Create hand-drawn-style diagrams and sketches on a virtual whiteboard
Collaborate in real time with teammates using end-to-end encrypted sharing
Save and reuse shapes and components with the built-in library feature
Embed directly into Notion, Obsidian, or VS Code for in-context diagramming
Use entirely free in the browser with no account required
Upgrade to Excalidraw+ starting at $7/month per editor for hosted team workspaces

STOA verdict

Excalidraw is a great fit for small teams who need a simple, no-fuss whiteboard for brainstorming, planning, or mapping out ideas without a steep learning curve. The completely free version is surprisingly capable, and the hand-drawn style keeps things casual and fast — perfect for quick sketches over polished diagrams. The main downside is that it's pretty basic compared to tools like Miro or Lucidchart, so if you need advanced diagramming or lots of templates, you may outgrow it quickly.