Highcharts
D3.js
Chart.js
Google Charts
AnyChart
Geckoboard
Plotly
ZingChart
WebPlotDigitizer
Plot Digitizer
g3data
DataThief III
DigitizeIt
im2graph
Silkscientific UN-SCAN-IT
GraphClick
Highcharts
WebPlotDigitizerWebPlotDigitizer is recommended for researchers, scientists, data analysts, and students who frequently need to extract data from published graphs and charts. It is particularly useful in fields such as biology, engineering, physics, and any other areas where visual data needs to be quantitatively analyzed.
D3.js - D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS.
Plot Digitizer - All-in-One Tool to Extract Data from Graphs, Plots & Images
Chart.js - Easy, object oriented client side graphs for designers and developers.
g3data - g3data is used for extracting data from graphs.
Google Charts - Interactive charts for browsers and mobile devices.
DataThief III - DataThief III is a program to extract (reverse engineer) data points from a graph.