Slack - A messaging app for teams who see through the Earth!
VideoScribe - Make your own whiteboard video animations with Sparkol VideoScribe – award-winning video scribing app for PC, Mac and iPad. Free trial available.
Smoothboard Air - Smoothboard Air is a collaborative interactive whiteboard application for iPads and Android devices that revolutionizes interaction in lecture rooms.
Groupboard - Free collaborative online whiteboard, web conferencing and online tutoring software that can be embedded in your own website. Used by many online tutors, schools and universities.
Witeboard - A real-time whiteboard for your team. No signups required.
The Draw Shop - The Draw Shop is a drawing and whiteboard animated video maker software solution that comes with lots of new features and tools.