OpenBoard - The OpenBoard software is an interactive white board software.
Pocket Lists - World’s Friendliest To-Do List App
Conceptboard - Instant Whiteboards for Teams & Projects
UpNote - A beautiful and clean cross-platform app for notes organizer
IDroo - A shared whiteboard for use by multiple Skype-users simultaneously. Features
Synology Note Station - Without needing to spend money on Evernote, Synology Note Station provides a desktop client to organize all your random notes in one place.