GitHub - ably-labs/whiteboard: an interactive whiteboard for multiple users
China Factory Multi Users Dual Pen Portable Smart Board Interactive Whiteboard - China Conference TV and Interactive Whiteboard price | Made-in-China.com
6 free interactive sites whiteboard for multiple users | by Ivanka Grigorova | Medium
PPLS Learning Tech Blog: Microsoft Whiteboard – PPLS Learning Technology Support
The 6 best online whiteboards for collaboration | Zapier
What Is a Hybrid Whiteboard and How It Can Help Your Team?