Sketchboard.io - Visual Remote Teamwork. Solve problems and create ideas on endless whiteboard with your teammates by sketching.
HeySpace - HeySpace is the only free task and simple project management software with communication and collaboration feature.
Draw.Chat - Anonymous real-time whiteboard with text and video chat.
P2 - Share, discuss, and collab with your team. By Wordpress.
Bluescape - Bluescape is a visual collaborative workspace designed to elevate work that empowers creation, collaborate, and innovate across the entire enterprise.
Slack - A messaging app for teams who see through the Earth!