Chart

https://en.wikipedia.org/wiki/Chart
http://piktochart.com/blog/
http://chartporn.org/
https://www.barchart.com/
http://tradingcharts.com
https://usefulcharts.com
http://www.icharts.in
http://www.chartjs.org

https://www.lucidchart.com/
https://spectrumchart.blogspot.com/

Grid

https://en.wikipedia.org/wiki/Smart_grid

https://www.smartgrid.gov/

https://css-tricks.com/

https://www.gridgame.com/

https://learncssgrid.com/

https://gridbyexample.com/

https://indiasmartgrid.org/