Pocket Lists - World’s Friendliest To-Do List App
Explain Everything - Explain Everything is an easy-to-use design, screencasting, and interactive whiteboard tool that...
UpNote - A beautiful and clean cross-platform app for notes organizer
Microsoft Whiteboard - The canvas where ideas, content, & people come together.
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.
Conceptboard - Instant Whiteboards for Teams & Projects