GraphClick is described as '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. Free download. Features automatic detection of solid, dashed or dotted lines, bar charts or symbols' and is an app in the education & reference category. There are more than 10 alternatives to GraphClick for a variety of platforms, including Windows, Linux, Mac, Web-based and Self-Hosted apps. The best GraphClick alternative is WebPlotDigitizer, which is both free and Open Source. Other great apps like GraphClick are Datafromchart, Engauge Digitizer, Plot Digitizer and DigitizeIt.
Graphreader is a simple browser-based tool for extracting numerical values from images of graphs and plots, then exporting the data into CSV files.
Graphreader is the most popular Self-Hosted alternative to GraphClick.
Take any graph or data from any source (Web or PDF document, for example), add your comments, and perform any manipulations, like nonlinear regression or curve fitting. Then print your results or export them to Excel or other database.
