A collaborative online whiteboard for business and education. Be more productive - have your ideas, sketches, and concepts on any device, anytime, anywhere.
Twiddla is a free, no-setup, web-based meeting playground. Mark up websites, graphics, and photos, or start brainstorming on a blank canvas. Voice and Text chat too!
PicPick is an all-in-one program that provides a full-featured screen capture tool, an intuitive image editor, a color picker, a color palette, a pixel- ruler, a protractor, a crosshair and even a whiteboard.
E. Mynatt, T. Igarashi, W. Edwards, and A. LaMarca. CHI '99: Proceedings of the SIGCHI conference on Human factors in computing systems, page 346--353. New York, NY, USA, ACM, (1999)
K. Everitt, S. Klemmer, R. Lee, and J. Landay. CHI '03: Proceedings of the SIGCHI conference on Human factors in computing systems, page 553--560. New York, NY, USA, ACM, (2003)
J. Tang, and S. Minneman. CHI '91: Proceedings of the SIGCHI conference on Human factors in computing systems, page 315--322. New York, NY, USA, ACM, (1991)The idea was evolved in 1991! Why didn't it get a successful product??.