Excalidraw

Excalidraw is a virtual whiteboard for sketching hand-drawn like diagrams in a fast and intuitive way. It emphasises privacy with the option to work entirely offline, ensuring that your drawings don’t leave your browser unless you want them to. Excalidraw’s simplicity and clutter-free interface make it a good choice for quick diagrams, wireframes, and brainstorming sessions. The tool supports collaborative features, allowing multiple users to draw on the same canvas simultaneously.

Pros:

• Simple, intuitive interface
• Real-time collaboration supported
• Fully open-source with a strong privacy focus

Cons:

• Limited to basic shapes and freehand drawing