GraphClick
g3data
WebPlotDigitizer
DataThief III
Silkscientific UN-SCAN-IT
im2graph
jTechDig
Plot Digitizer
Vim Python IDE
GraphClick
Vim Python IDENo features have been listed yet.
g3data - g3data is used for extracting data from graphs.
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.
Silkscientific UN-SCAN-IT - Digitizing Software converts graph image files to usable (x,y) data automatically
im2graph - im2graph graph digitizing software to convert graphs to numbers
jTechDig - Software tool written in Java for digitizing data from an image of graph or plot.