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GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
Graph - Graph is an open source application used to draw mathematical graphs in a coordinate system.
LabPlot - LabPlot is a KDE-application for interactive graphing and analysis of scientific data.
Grapher - Put Grapher’s powerful graphing and data analysis features to the test and better understand your data. Learn about features and download a free trial.
Matplotlib - matplotlib is a python 2D plotting library which produces publication quality figures in a variety...
GeoGebra - GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching.