g3data
WebPlotDigitizer
im2graph
DataThief III
Silkscientific UN-SCAN-IT
GraphClick
Plot Digitizer
Software tool written in Java for digitizing data from an image of graph or plot.

LabPlot
Plot Digitizer
WebPlotDigitizer
Plotly
DataFromChart
Graph
OriginPro
SmartPlot is bilingual desktop scientific plotting and data analysis software for researchers, covering data import, analysis, publication-ready figures, composition, and export.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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jTD
jTechDig
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|---|---|---|
| Website | code.google.com | smartplot.app |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

Possible disadvantages
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using jTechDig and SmartPlot. For example, how are they different and which one is better?
When comparing jTechDig and SmartPlot, you can also consider the following products.

LabPlot is a KDE-application for interactive graphing and analysis of scientific data.
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WebPlotDigitizer - Web based tool to extract numerical data from plots, images and maps.
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All-in-One Tool to Extract Data from Graphs, Plots & Images
Compare Plot Digitizer to jTechDig or SmartPlot:

im2graph graph digitizing software to convert graphs to numbers
Compare im2graph to jTechDig or SmartPlot:

DataThief III is a program to extract (reverse engineer) data points from a graph.
Compare DataThief III to jTechDig or SmartPlot: