OpenBoard - The OpenBoard software is an interactive white board software.
CoSketch - CoSketch is a multi-user online whiteboard designed to give you the ability to quickly visualize and share your ideas as images. No registration or plugins required.
Conceptboard - Instant Whiteboards for Teams & Projects
IDroo - A shared whiteboard for use by multiple Skype-users simultaneously. Features
Coccinella - Coccinella is a free and open-source cross-platform instant messaging client with a built-in...
Microsoft Whiteboard - The canvas where ideas, content, & people come together.