working with templates is good but their numbers should be increase i suggest working on the chat messenger boost its ui lovely landing page though!! ;)
I like working with its panel
Samsung Flip - A 55" digital white board from Samsung
Conceptboard - Instant Whiteboards for Teams & Projects
Vecta - Team diagramming on advanced SVG editor
OpenBoard - The OpenBoard software is an interactive white board software.
Sketchboard.io - Visual Remote Teamwork. Solve problems and create ideas on endless whiteboard with your teammates by sketching.
Witeboard - A real-time whiteboard for your team. No signups required.