Gnuplot is a portable command-line driven interactive data and function plotting utility. It was originally intended as to allow scientists and students to visualize mathematical functions and data. It does this job pretty well, but has grown to support many non-interactive uses, including web scripting and integration as a plotting engine for third-party applications like Octave. Gnuplot supports many types of plots in either 2D and 3D. It can draw using lines, points, boxes, contours, vector fields, sur... More info »
It's worth noting that despite the name, gnuplot is gratis software rather than libre. It is not licensed under the GNU GPL.
please somebody add this icon: http://www.gnuplot.info/screenshots/figs/gnuplot-icon-large.png
Pick a reason for reporting this application below and then give us some more details in a few words. Please include URLs and so on if relevant.