gnuplot is a command-line program that can generate two- and three-dimensional plots of functions, data, and data fits.
License: Open Source
GnuPlot is a powerful open-source tool favored for its flexibility and ability to produce high-quality scientific graphs, but it has a steeper learning curve. In contrast, Microsoft Mathematics offers a more user-friendly experience with integrated features for education and basic mathematics, though it lacks the advanced capabilities and cross-platform support of GnuPlot.