Excalidraw
Hand-drawn style whiteboard for diagrams and brainstorming
Excalidraw is a virtual whiteboard with a distinctive hand-drawn aesthetic. Used by developers for architecture diagrams, system design, and brainstorming. Features real-time collaboration, libraries of shapes, and embeddable components.
Panel Reviews
The Builder
Developer Perspective
“My go-to for system architecture diagrams. The hand-drawn style makes diagrams feel approachable rather than intimidating. Real-time collab works flawlessly.”
The Creator
Content & Design
“The aesthetic is the differentiator. Every diagram looks friendly and informal which makes it perfect for presentations, blog posts, and documentation.”
The Skeptic
Reality Check
“Simple, fast, free. Does one thing well. The library system for reusable components is useful. Not trying to be Figma and that is a strength.”
Community Sentiment
“The hand-drawn aesthetic makes architecture diagrams feel less intimidating in meetings”
“Using this for every system design interview — it's fast and looks great”
“Excalidraw is the tool I recommend to every engineer for quick diagrams”
“Open source, collaborative, and beautiful — rare combo”