gnuplot plots 2d and 3d graphs, from a data file or with a formula. It has an interactive mode with online help, or it can be used non-interactively. gnuplot does function fitting to data sets, and it does output to many terminals, among which are PostScript, X11 display, PNG, and GIF (via the old gd library).
30 Day SummaryJan 27 2026 — Feb 26 2026
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12 Month SummaryFeb 26 2025 — Feb 26 2026
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