Excalidraw

Excalidraw is a free online whiteboard for drawing diagrams with a hand-drawn look. It runs in your browser with no sign-up, so you can start sketching in seconds. The simple toolbar keeps things fast: shapes, arrows, and text that look like marker sketches. It is open source, and you can collaborate with others on the same canvas in real time. Your drawings are saved in your browser storage, so save your work to a file regularly. A paid upgrade called Excalidraw+ adds extra features.

Key Features

1. Hand-Drawn Style

Every shape, arrow, and line looks like a quick marker sketch. The friendly style makes technical diagrams feel approachable and fun.

2. Real-Time Collaboration

Share a link and draw together with others on the same canvas. Everyone's cursors appear live, which is great for remote brainstorming.

3. No Sign-Up Needed

The whiteboard opens instantly in your browser. There is no account to create and nothing to install before you start drawing.

4. Open Source

Excalidraw's code is open source, so anyone can inspect it, contribute, or host their own copy. Transparency builds trust with users.

5. Export Your Drawings

Save your work as image files or as scene files you can reopen and edit later. Exporting keeps your diagrams safe and shareable.

Frequently Asked Questions (FAQ)

Where are my Excalidraw drawings saved?

Your drawings are saved in your browser's local storage. The site warns that this storage can be cleared unexpectedly, so save important work to a file.

What is Excalidraw+?

Excalidraw+ is the paid upgrade of Excalidraw with extra features and a 14-day trial. The standard whiteboard at excalidraw.com remains available without it.

Can I collaborate with others in real time?

Yes. Excalidraw supports collaborative whiteboarding — you can share your canvas so multiple people can draw together at the same time.

Do I need an account to use Excalidraw?

No. Just open excalidraw.com and start drawing. Nothing to install, no sign-up forms, and no waiting.

Is Excalidraw really open source?

Yes. The project's code is publicly available on GitHub under an open-source license, and the community actively contributes to it.

Conclusion

Excalidraw is the fastest way to sketch an idea and share it with others. The hand-drawn style keeps diagrams friendly, and real-time collaboration makes remote teamwork feel natural. Just remember to save your work to a file, since browser storage can be cleared. For quick visuals on the fly, few tools can beat it today.