Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
NoteBookCast - A real time shared whiteboard in your browser, teach, explain, sketch. For work, study, fun.
Facebook Messenger - Facebook Messenger is a faster way to message.
IDroo - A shared whiteboard for use by multiple Skype-users simultaneously. Features
Digsby - Tagged makes it easy to meet and socialize with new people through games, shared interests, friend suggestions, browsing profiles, and much more.
Conceptboard - Instant Whiteboards for Teams & Projects