Scribblar - Scribblar is a free online collaboration tool that is perfect for online tutoring.
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
OpenBoard - The OpenBoard software is an interactive white board software.
Facebook Messenger - Facebook Messenger is a faster way to message.
NoteBookCast - A real time shared whiteboard in your browser, teach, explain, sketch. For work, study, fun.
Digsby - Tagged makes it easy to meet and socialize with new people through games, shared interests, friend suggestions, browsing profiles, and much more.