Scribble Online Whiteboard - Scribble Online Whiteboard is an advanced collaborative whiteboard solution that allows you to draw the sketch using the web-based or mobile platforms such as iPad/iPhone and Android.

RemoteHQ - Real-time collaboration for distributed teams

Ryeboard - A practical and visual workspace for modern teams

Diagrams for Mac - A diagram editor for visualizing structures and processes

Whiteboard Team - Draw, explain and collaborate visually in real-time.

Stately Viz - Visualize, simulate, and inspect your state machines