Excalidraw
Open source
Overview
Excalidraw is a virtual collaborative whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel. It functionality for creating flowcharts, wireframes, and simple illustrations. It is open-source, features end-to-end encryption for security, and can be used directly in the browser with offline support.
Key features
- Hand-drawn style diagrams
- End-to-end encryption
- Infinite canvas
- Real-time collaboration
- Export to PNG/SVG
- No sign-up required