LabPlot
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https://edu.kde.org/applications/science/labplot/

LabPlot is a KDE-application for interactive graphing and analysis of scientific data.
LabPlot provides an easy way to create, manage and edit plots. It allows you to produce
plots based on data from a spreadsheet or on data imported from external files. Plots 
can be exported to several pixmap and vector graphic formats.

Please see INSTALL for installation details.

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The most current stable version is avaible here:
http://labplot.sourceforge.net/download/

If you want to see the current state of the project or to follow the development, checkout
our git repository:
git clone git://anongit.kde.org/labplot

If you're interested in following the development of the project or would like to conribute,
consider subscribing to kde-edu mailing list. See https://mail.kde.org/mailman/listinfo/kde-edu for more information.