Excalidraw

You want to quickly sketch a diagram or prototype without rigid, polished lines. Excalidraw leans into a hand-drawn look: an open-source virtual collaborative whiteboard for diagrams with a hand-drawn feel.

Features

Hand-Drawn Style: Diagrams with a sketchy feel.

Collaborative Whiteboard: Real-time multi-user.

Open & Self-Host: Customize your own whiteboard.