gnuplot is a command-line program that can generate two- and three-dimensional plots of functions, data, and data fits.
License: Open Source
GeoGebra is primarily designed for educational purposes with a focus on interactive and user-friendly mathematical visualizations, making it ideal for students and educators. In contrast, GnuPlot offers powerful scripting and advanced data analysis capabilities, catering to a more technical audience looking for customization and precision in graphing.