Allo.io - Whiteboarding, documentation, and video chat in one place.
Limnu - Sketch, share and collaborate with your team
Butter - Butter is a newly launched chatting application that focuses more on the privacy of its users.
Draw.Chat - Anonymous real-time whiteboard with text and video chat.
Sketchboard.io - Visual Remote Teamwork. Solve problems and create ideas on endless whiteboard with your teammates by sketching.
Crucial Human Stickies - A fun visual way to curate, organize, and manage your work