Utility to help get accurate interpolated values from an image of a chart.
devconifer
http://graphulator.com/
POLYWOCK
https://runapps.org
https://graphite.dev
https://chartfox.org
https://diagrams.net
https://www.livepolls.app/chrome_addons/
Canvas Chart Extension
devagamjot
jasonlong
https://paintontab.com/
