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
Diagrams for Mac - A diagram editor for visualizing structures and processes
Conceptboard - Instant Whiteboards for Teams & Projects
The Data Visualisation Catalogue - Reference tool for data visualisation
OpenBoard - The OpenBoard software is an interactive white board software.
nivo - nivo provides a rich set of dataviz components
Witeboard - A real-time whiteboard for your team. No signups required.