UPD' 2019: RealtimeBoard is now called Miro.
RealtimeBoard is an online whiteboard for remote product teams. Over 2M users use us to review and plan sprints together, map complex flowcharts, create and discuss prototypes and present research results.
Inko is a peer-to-peer collaborative whiteboard for iPad, iPhone, and AppleTV that lets you draw together & brainstorm even without internet connection.
Real-time collaborative online diagramming tool for teams to work better together. Less emails, more effective communication. Powered by SVG, with ability to easily create diagrams or even graphics you're proud to share!