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DigitizeIt
Plot Digitizer
WebPlotDigitizer
GraphClick
g3data
Silkscientific UN-SCAN-IT
im2graph
jTechDig
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DigitizeItGitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Plot Digitizer - All-in-One Tool to Extract Data from Graphs, Plots & Images
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
WebPlotDigitizer - WebPlotDigitizer - Web based tool to extract numerical data from plots, images and maps.
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
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.