Jamboard - Interactive Business Whiteboard | G Suite
Allo.io - Whiteboarding, documentation, and video chat in one place.
DrawAttention - A whiteboard for you laptop lid
Butter - Butter is a newly launched chatting application that focuses more on the privacy of its users.
Whiteboard - Simple whiteboard app to make sketching quick & easy
Draw.Chat - Anonymous real-time whiteboard with text and video chat.