
im2graph
g3data
DataThief III
WebPlotDigitizer
Silkscientific UN-SCAN-IT
GraphClick
jTechDig
Plot Digitizer
GuidePlugin
WP Guidant
im2graph
GuidePluging3data - g3data is used for extracting data from graphs.
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DataThief III - DataThief III is a program to extract (reverse engineer) data points from a graph.
WebPlotDigitizer - WebPlotDigitizer - Web based tool to extract numerical data from plots, images and maps.
Silkscientific UN-SCAN-IT - Digitizing Software converts graph image files to usable (x,y) data automatically
GraphClick - GraphClick is a graph digitizer shareware for Mac OS X which allows to automatically retrieve the original (x,y)-data from the image of a scanned graphor fom QuickTime movies.