2d Data Plotter
Plot Digitizer
DigitizeIt
WebPlotDigitizer
GetData Graph Digitizer
GraphClick
g3data
WebPlotDigitizer
DataThief III
Silkscientific UN-SCAN-IT
im2graph
jTechDig
Plot Digitizer
Plot Digitizer - All-in-One Tool to Extract Data from Graphs, Plots & Images
g3data - g3data is used for extracting data from graphs.
DigitizeIt - Sometimes it is necessary to extract data values from graphs, e.g.
WebPlotDigitizer - WebPlotDigitizer - Web based tool to extract numerical data from plots, images and maps.
DataThief III - DataThief III is a program to extract (reverse engineer) data points from a graph.
GetData Graph Digitizer - GetData Graph Digitizer is a tool for digitizing plots and graphs.