OpenBoard - The OpenBoard software is an interactive white board software.
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Conceptboard - Instant Whiteboards for Teams & Projects
Nintex - Cloud-based digital workflow management automation platform
Scribblar - Scribblar is a free online collaboration tool that is perfect for online tutoring.
ProcessMaker - ProcessMaker is an easy to use BPM and workflow software solution. It is used to design, automate, and deploy business processes of any kind.