IDroo - A shared whiteboard for use by multiple Skype-users simultaneously. Features
Scribblar - Scribblar is a free online collaboration tool that is perfect for online tutoring.
Conceptboard - Instant Whiteboards for Teams & Projects
Coccinella - Coccinella is a free and open-source cross-platform instant messaging client with a built-in...
Board800 - Board800 is an interactive whiteboard application which uses Red5 as the back-end media server, and...
drawonthe.net - Draw on the . net is an online, multi-user, drawing website.