KDE's Applications Education 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.
LabPlot is distributed under the terms of the GNU General Public License (GPL), Version 2.